diff --git a/Runtime/Character/CFBStreamedAnimReader.cpp b/Runtime/Character/CFBStreamedAnimReader.cpp
index c86cf3db6..e9cceb386 100644
--- a/Runtime/Character/CFBStreamedAnimReader.cpp
+++ b/Runtime/Character/CFBStreamedAnimReader.cpp
@@ -5,81 +5,273 @@ namespace urde
 
 void CFBStreamedAnimReaderTotals::Allocate(u32 chanCount)
 {
-    u32 chan16 = chanCount * 16;
     u32 chan2 = chanCount * 2;
     u32 chan32 = chanCount * 32;
 
-    x0_buffer.reset(new u8[chan16 + chanCount + chan2 + chan32]);
-    x4_first16 = x0_buffer.get();
-    x8_second1 = x4_first16 + chan16;
-    xc_third2 = x8_second1 + chanCount;
-    x10_fourth32 = xc_third2 + chan2;
+    x0_buffer.reset(new u8[chan32 + chanCount + chan2 + chan32]);
+    x4_cumulativeInts32 = reinterpret_cast<s32*>(x0_buffer.get());
+    x8_hasTrans1 = reinterpret_cast<u8*>(x4_cumulativeInts32 + chanCount * 8);
+    xc_segIds2 = reinterpret_cast<u16*>(x8_hasTrans1 + chanCount);
+    x10_computedFloats32 = reinterpret_cast<float*>(xc_segIds2 + chanCount);
 }
 
-CFBStreamedAnimReaderTotals::CFBStreamedAnimReaderTotals(const CFBStreamedCompression& source)
+void CFBStreamedAnimReaderTotals::Initialize(const CFBStreamedCompression& source)
 {
-    const CFBStreamedCompression::Header* header =
-        reinterpret_cast<const CFBStreamedCompression::Header*>(source.xc_rotsAndOffs.get());
-    const u32* bitmap = reinterpret_cast<const u32*>(source.xc_rotsAndOffs.get() + 9);
-    u32 bitmapWordCount = (bitmap[0] + 31) / 32;
-
-    x14_rotDiv = header->rotDiv;
-    x18_transMult = header->translationMult;
-
-    const u8* chans = reinterpret_cast<const u8*>(bitmap + bitmapWordCount + 1);
-    u32 boneChanCount = *reinterpret_cast<const u32*>(chans);
-    x24_boneChanCount = boneChanCount;
-    Allocate(x24_boneChanCount);
-}
-
-CFBStreamedPairOfTotals::CFBStreamedPairOfTotals(const TSubAnimTypeToken<CFBStreamedCompression>& source)
-: x0_source(source), xc_rotsAndOffs(source->xc_rotsAndOffs.get()), x14_(*source), x3c_(*source)
-{
-    const u32* bitmap = reinterpret_cast<const u32*>(source->xc_rotsAndOffs.get() + 9);
-    u32 bitmapWordCount = (bitmap[0] + 31) / 32;
-
-    const u8* chans = reinterpret_cast<const u8*>(bitmap + bitmapWordCount + 1);
+    const u8* chans = source.GetPerChannelHeaders();
     u32 boneChanCount = *reinterpret_cast<const u32*>(chans);
     chans += 4;
 
-    if (source->m_pc)
+    if (source.m_pc)
     {
         for (int b=0 ; b<boneChanCount ; ++b)
         {
-            chans += 20;
+            xc_segIds2[b] = *reinterpret_cast<const u32*>(chans);
+            chans += 8;
+
+            s32* cumulativesOut = &x4_cumulativeInts32[8*b];
+            const s32* cumulativesIn = reinterpret_cast<const s32*>(chans);
+            cumulativesOut[0] = cumulativesIn[0] >> 8;
+            cumulativesOut[1] = cumulativesIn[1] >> 8;
+            cumulativesOut[2] = cumulativesIn[2] >> 8;
+            chans += 12;
 
             u32 tCount = *reinterpret_cast<const u32*>(chans);
             chans += 4;
             if (tCount)
+            {
+                x8_hasTrans1[b] = true;
+                const s32* cumulativesIn = reinterpret_cast<const s32*>(chans);
+                cumulativesOut[3] = cumulativesIn[0] >> 8;
+                cumulativesOut[4] = cumulativesIn[1] >> 8;
+                cumulativesOut[5] = cumulativesIn[2] >> 8;
                 chans += 12;
+            }
+            else
+                x8_hasTrans1[b] = false;
         }
     }
     else
     {
         for (int b=0 ; b<boneChanCount ; ++b)
         {
-            chans += 15;
+            xc_segIds2[b] = *reinterpret_cast<const u32*>(chans);
+            chans += 6;
+
+            s32* cumulativesOut = &x4_cumulativeInts32[8*b];
+            cumulativesOut[0] = *reinterpret_cast<const s16*>(chans);
+            cumulativesOut[1] = *reinterpret_cast<const s16*>(chans + 3);
+            cumulativesOut[2] = *reinterpret_cast<const s16*>(chans + 6);
+            chans += 9;
 
             u16 tCount = *reinterpret_cast<const u16*>(chans);
             chans += 2;
             if (tCount)
+            {
+                x8_hasTrans1[b] = true;
+                cumulativesOut[3] = *reinterpret_cast<const s16*>(chans);
+                cumulativesOut[4] = *reinterpret_cast<const s16*>(chans + 3);
+                cumulativesOut[5] = *reinterpret_cast<const s16*>(chans + 6);
                 chans += 9;
+            }
+            else
+                x8_hasTrans1[b] = false;
         }
     }
+}
 
-    x88_ = chans;
-    x8c_ = &x88_;
-    x90_ = *reinterpret_cast<const u32*>(*x8c_);
+CFBStreamedAnimReaderTotals::CFBStreamedAnimReaderTotals(const CFBStreamedCompression& source)
+{
+    const CFBStreamedCompression::Header& header = source.MainHeader();
+    x14_rotDiv = header.rotDiv;
+    x18_transMult = header.translationMult;
+
+    const u8* chans = source.GetPerChannelHeaders();
+    x24_boneChanCount = *reinterpret_cast<const u32*>(chans);
+    Allocate(x24_boneChanCount);
+    Initialize(source);
+}
+
+void CFBStreamedAnimReaderTotals::IncrementInto(CBitLevelLoader& loader,
+                                                const CFBStreamedCompression& source,
+                                                CFBStreamedAnimReaderTotals& dest)
+{
+    const u8* chans = source.GetPerChannelHeaders();
+    u32 boneChanCount = *reinterpret_cast<const u32*>(chans);
+    chans += 4;
+
+    if (source.m_pc)
+    {
+        for (int b=0 ; b<boneChanCount ; ++b)
+        {
+            chans += 8;
+
+            const s32* cumulativesIn = &x4_cumulativeInts32[8*b];
+            s32* cumulativesOut = &dest.x4_cumulativeInts32[8*b];
+            const s32* qsIn = reinterpret_cast<const s32*>(chans);
+            cumulativesOut[0] = loader.LoadBool();
+            cumulativesOut[1] = cumulativesIn[1] + loader.LoadSigned(qsIn[0] & 0xff);
+            cumulativesOut[2] = cumulativesIn[2] + loader.LoadSigned(qsIn[1] & 0xff);
+            cumulativesOut[3] = cumulativesIn[3] + loader.LoadSigned(qsIn[2] & 0xff);
+            chans += 12;
+
+            u32 tCount = *reinterpret_cast<const u32*>(chans);
+            chans += 4;
+            if (tCount)
+            {
+                const s32* qsIn = reinterpret_cast<const s32*>(chans);
+                cumulativesOut[4] = cumulativesIn[4] + loader.LoadSigned(qsIn[0] & 0xff);
+                cumulativesOut[5] = cumulativesIn[5] + loader.LoadSigned(qsIn[1] & 0xff);
+                cumulativesOut[6] = cumulativesIn[6] + loader.LoadSigned(qsIn[2] & 0xff);
+                chans += 12;
+            }
+        }
+    }
+    else
+    {
+        for (int b=0 ; b<boneChanCount ; ++b)
+        {
+            chans += 6;
+
+            const s32* cumulativesIn = &x4_cumulativeInts32[8*b];
+            s32* cumulativesOut = &dest.x4_cumulativeInts32[8*b];
+            cumulativesOut[0] = loader.LoadBool();
+            cumulativesOut[1] = cumulativesIn[1] + loader.LoadSigned(*reinterpret_cast<const u8*>(chans + 2));
+            cumulativesOut[2] = cumulativesIn[2] + loader.LoadSigned(*reinterpret_cast<const u8*>(chans + 5));
+            cumulativesOut[3] = cumulativesIn[3] + loader.LoadSigned(*reinterpret_cast<const u8*>(chans + 8));
+            chans += 9;
+
+            u16 tCount = *reinterpret_cast<const u16*>(chans);
+            chans += 2;
+            if (tCount)
+            {
+                cumulativesOut[4] = cumulativesIn[4] + loader.LoadSigned(*reinterpret_cast<const u8*>(chans + 2));
+                cumulativesOut[5] = cumulativesIn[5] + loader.LoadSigned(*reinterpret_cast<const u8*>(chans + 5));
+                cumulativesOut[6] = cumulativesIn[5] + loader.LoadSigned(*reinterpret_cast<const u8*>(chans + 8));
+                chans += 9;
+            }
+        }
+    }
+}
+
+void CFBStreamedAnimReaderTotals::CalculateDown()
+{
+    for (int b=0 ; b<x24_boneChanCount ; ++b)
+    {
+        const s32* cumulativesIn = &x4_cumulativeInts32[8*b];
+        float* compOut = &x10_computedFloats32[8*b];
+
+        float q = M_PIF / 2.f / float(x14_rotDiv);
+        compOut[1] = std::sin(cumulativesIn[1] * q);
+        compOut[2] = std::sin(cumulativesIn[2] * q);
+        compOut[3] = std::sin(cumulativesIn[3] * q);
+
+        compOut[0] = std::sqrt(std::max(1.f - (compOut[1] * compOut[1] +
+                                               compOut[2] * compOut[2] +
+                                               compOut[3] * compOut[3]), 0.f));
+        if (cumulativesIn[0])
+            compOut[0] = -compOut[0];
+
+        if (x8_hasTrans1[b])
+        {
+            compOut[4] = cumulativesIn[4] * x18_transMult;
+            compOut[5] = cumulativesIn[5] * x18_transMult;
+            compOut[6] = cumulativesIn[6] * x18_transMult;
+        }
+    }
+}
+
+CFBStreamedPairOfTotals::CFBStreamedPairOfTotals(const TSubAnimTypeToken<CFBStreamedCompression>& source)
+: x0_source(source), xc_rotsAndOffs(source->xc_rotsAndOffs.get()), x14_(*source), x3c_(*source)
+{
+}
+
+u32 CBitLevelLoader::LoadUnsigned(u8 q)
+{
+    u32 byteCur = (m_bitIdx / 32) * 4;
+    u32 bitRem = m_bitIdx % 32;
+
+    /* Fill 32 bit buffer with region containing bits */
+    /* Make them least significant */
+    u32 tempBuf = hecl::SBig(*reinterpret_cast<const u32*>(m_data + byteCur)) >> bitRem;
+
+    /* If this shift underflows the value, buffer the next 32 bits */
+    /* And tack onto shifted buffer */
+    if ((bitRem + q) > 32)
+    {
+        u32 tempBuf2 = hecl::SBig(*reinterpret_cast<const u32*>(m_data + byteCur + 4));
+        tempBuf |= (tempBuf2 << (32 - bitRem));
+    }
+
+    /* Mask it */
+    u32 mask = (1 << q) - 1;
+    tempBuf &= mask;
+
+    /* Return delta value */
+    m_bitIdx += q;
+    return tempBuf;
+}
+
+s32 CBitLevelLoader::LoadSigned(u8 q)
+{
+    u32 byteCur = (m_bitIdx / 32) * 4;
+    u32 bitRem = m_bitIdx % 32;
+
+    /* Fill 32 bit buffer with region containing bits */
+    /* Make them least significant */
+    u32 tempBuf = hecl::SBig(*reinterpret_cast<const u32*>(m_data + byteCur)) >> bitRem;
+
+    /* If this shift underflows the value, buffer the next 32 bits */
+    /* And tack onto shifted buffer */
+    if ((bitRem + q) > 32)
+    {
+        u32 tempBuf2 = hecl::SBig(*reinterpret_cast<const u32*>(m_data + byteCur + 4));
+        tempBuf |= (tempBuf2 << (32 - bitRem));
+    }
+
+    /* Mask it */
+    u32 mask = (1 << q) - 1;
+    tempBuf &= mask;
+
+    /* Sign extend */
+    u32 sign = (tempBuf >> (q - 1)) & 0x1;
+    if (sign)
+        tempBuf |= ~0u << q;
+
+    /* Return delta value */
+    m_bitIdx += q;
+    return s32(tempBuf);
+}
+
+bool CBitLevelLoader::LoadBool()
+{
+    u32 byteCur = (m_bitIdx / 32) * 4;
+    u32 bitRem = m_bitIdx % 32;
+
+    /* Fill 32 bit buffer with region containing bits */
+    /* Make them least significant */
+    u32 tempBuf = hecl::SBig(*reinterpret_cast<const u32*>(m_data + byteCur)) >> bitRem;
+
+    /* That's it */
+    m_bitIdx += 1;
+    return tempBuf & 0x1;
 }
 
 CSegIdToIndexConverter::CSegIdToIndexConverter(const CFBStreamedAnimReaderTotals& totals)
 {
+    for (u32 b=0 ; b<totals.x24_boneChanCount ; ++b)
+    {
+        u16 segId = totals.xc_segIds2[b];
+        if (segId >= 96)
+            continue;
+        x0_indices[segId] = b;
+    }
 }
 
 CFBStreamedAnimReader::CFBStreamedAnimReader(const TSubAnimTypeToken<CFBStreamedCompression>& source, const CCharAnimTime& time)
 : CAnimSourceReaderBase(std::make_unique<TAnimSourceInfo<CFBStreamedCompression>>(source), time), x54_source(source),
   x64_steadyStateInfo(source->IsLooping(), source->GetAnimationDuration(), source->GetRootOffset()),
-  x7c_(source), x114_(x7c_.x10_ ? x7c_.x14_ : x7c_.x3c_)
+  x7c_totals(source), x88_bitstreamData(source->GetBitstreamPointer()), x8c_bitLoader(x88_bitstreamData),
+  x114_segIdToIndex(x7c_totals.x10_ ? x7c_totals.x14_ : x7c_totals.x3c_)
 {
     PostConstruct(time);
 }
diff --git a/Runtime/Character/CFBStreamedAnimReader.hpp b/Runtime/Character/CFBStreamedAnimReader.hpp
index 768370221..47101f843 100644
--- a/Runtime/Character/CFBStreamedAnimReader.hpp
+++ b/Runtime/Character/CFBStreamedAnimReader.hpp
@@ -6,6 +6,7 @@
 
 namespace urde
 {
+class CBitLevelLoader;
 
 template <class T>
 class TAnimSourceInfo : public IAnimSourceInfo
@@ -23,19 +24,24 @@ public:
 
 class CFBStreamedAnimReaderTotals
 {
+    friend class CSegIdToIndexConverter;
     std::unique_ptr<u8[]> x0_buffer;
-    u8* x4_first16;
-    u8* x8_second1;
-    u8* xc_third2;
-    u8* x10_fourth32;
+    s32* x4_cumulativeInts32; /* Used to be 16 per channel */
+    u8* x8_hasTrans1;
+    u16* xc_segIds2;
+    float* x10_computedFloats32;
     u32 x14_rotDiv;
     float x18_transMult;
-    u32 x1c_ = 0;
+    u32 x1c_curKey = 0;
     bool x20_ = false;
     u32 x24_boneChanCount;
     void Allocate(u32 chanCount);
+    void Initialize(const CFBStreamedCompression& source);
 public:
     CFBStreamedAnimReaderTotals(const CFBStreamedCompression& source);
+    void IncrementInto(CBitLevelLoader& loader, const CFBStreamedCompression& source,
+                       CFBStreamedAnimReaderTotals& dest);
+    void CalculateDown();
 };
 
 class CFBStreamedPairOfTotals
@@ -47,27 +53,38 @@ class CFBStreamedPairOfTotals
     bool x10_ = true;
     CFBStreamedAnimReaderTotals x14_;
     CFBStreamedAnimReaderTotals x3c_;
-    const u8* x88_;
-    const u8** x8c_;
-    u32 x90_;
-    u32 x94_ = 0;
 public:
     CFBStreamedPairOfTotals(const TSubAnimTypeToken<CFBStreamedCompression>& source);
 };
 
+class CBitLevelLoader
+{
+    const u8* m_data;
+    size_t m_bitIdx = 0;
+public:
+    CBitLevelLoader(const void* data)
+    : m_data(reinterpret_cast<const u8*>(data)) {}
+    u32 LoadUnsigned(u8 q);
+    s32 LoadSigned(u8 q);
+    bool LoadBool();
+};
+
 class CSegIdToIndexConverter
 {
     u32 x0_indices[96] = {-1};
 public:
     CSegIdToIndexConverter(const CFBStreamedAnimReaderTotals& totals);
+    u32 SegIdToIndex(const CSegId& id) const { return x0_indices[id]; }
 };
 
 class CFBStreamedAnimReader : public CAnimSourceReaderBase
 {
     TSubAnimTypeToken<CFBStreamedCompression> x54_source;
     CSteadyStateAnimInfo x64_steadyStateInfo;
-    CFBStreamedPairOfTotals x7c_;
-    CSegIdToIndexConverter x114_;
+    CFBStreamedPairOfTotals x7c_totals;
+    const u8* x88_bitstreamData;
+    CBitLevelLoader x8c_bitLoader;
+    CSegIdToIndexConverter x114_segIdToIndex;
 public:
     CFBStreamedAnimReader(const TSubAnimTypeToken<CFBStreamedCompression>& source, const CCharAnimTime& time);
 
diff --git a/Runtime/Character/CFBStreamedCompression.cpp b/Runtime/Character/CFBStreamedCompression.cpp
index 8f36d74de..5da775581 100644
--- a/Runtime/Character/CFBStreamedCompression.cpp
+++ b/Runtime/Character/CFBStreamedCompression.cpp
@@ -15,6 +15,50 @@ CFBStreamedCompression::CFBStreamedCompression(CInputStream& in, IObjectStore& o
         x8_evntToken = objStore.GetObj(SObjectTag{FOURCC('EVNT'), x4_evnt});
 }
 
+const u8* CFBStreamedCompression::GetPerChannelHeaders() const
+{
+    const u32* bitmap = reinterpret_cast<const u32*>(xc_rotsAndOffs.get() + 9);
+    u32 bitmapWordCount = (bitmap[0] + 31) / 32;
+    return reinterpret_cast<const u8*>(bitmap + bitmapWordCount + 1);
+}
+
+const u8* CFBStreamedCompression::GetBitstreamPointer() const
+{
+    const u32* bitmap = reinterpret_cast<const u32*>(xc_rotsAndOffs.get() + 9);
+    u32 bitmapWordCount = (bitmap[0] + 31) / 32;
+
+    const u8* chans = reinterpret_cast<const u8*>(bitmap + bitmapWordCount + 1);
+    u32 boneChanCount = *reinterpret_cast<const u32*>(chans);
+    chans += 4;
+
+    if (m_pc)
+    {
+        for (int b=0 ; b<boneChanCount ; ++b)
+        {
+            chans += 20;
+
+            u32 tCount = *reinterpret_cast<const u32*>(chans);
+            chans += 4;
+            if (tCount)
+                chans += 12;
+        }
+    }
+    else
+    {
+        for (int b=0 ; b<boneChanCount ; ++b)
+        {
+            chans += 15;
+
+            u16 tCount = *reinterpret_cast<const u16*>(chans);
+            chans += 2;
+            if (tCount)
+                chans += 9;
+        }
+    }
+
+    return chans;
+}
+
 std::unique_ptr<u32[]> CFBStreamedCompression::GetRotationsAndOffsets(u32 words, CInputStream& in)
 {
     std::unique_ptr<u32[]> ret(new u32[words]);
diff --git a/Runtime/Character/CFBStreamedCompression.hpp b/Runtime/Character/CFBStreamedCompression.hpp
index 49c9f9b96..3e587c8b8 100644
--- a/Runtime/Character/CFBStreamedCompression.hpp
+++ b/Runtime/Character/CFBStreamedCompression.hpp
@@ -67,6 +67,8 @@ private:
 public:
     CFBStreamedCompression(CInputStream& in, IObjectStore& objStore, bool pc);
     const Header& MainHeader() const { return *reinterpret_cast<const Header*>(xc_rotsAndOffs.get()); }
+    const u8* GetPerChannelHeaders() const;
+    const u8* GetBitstreamPointer() const;
     bool IsLooping() const { return MainHeader().looping; }
     CCharAnimTime GetAnimationDuration() const { return MainHeader().duration; }
     const zeus::CVector3f& GetRootOffset() const { return x14_rootOffset; }