diff --git a/Sources/Plasma/Apps/plClient/plClient.cpp b/Sources/Plasma/Apps/plClient/plClient.cpp
index c1013bf1..eb5ab0ef 100644
--- a/Sources/Plasma/Apps/plClient/plClient.cpp
+++ b/Sources/Plasma/Apps/plClient/plClient.cpp
@@ -1287,7 +1287,20 @@ void plClient::IProgressMgrCallbackProc(plOperationProgress * progress)
 		return;
 
 	fInstance->fMessagePumpProc();
-	fInstance->IDraw();
+
+	// HACK HACK HACK HACK!
+	// Yes, this is the ORIGINAL, EVIL famerate limit from plClient::IDraw (except I bumped it to 60fps)
+	// As it so happens, this callback is happening in the main resource loading thread
+	// Without this NASTY ASS HACK, we draw after loading every KO, which starves the loader.
+	// At some point, a better solution should be found... Like running the loader in a separate thread.
+	static float lastDrawTime;
+	static const float kMaxFrameRate = 1.f/60.f;
+	float currTime = (float) hsTimer::GetSeconds();
+	if ((currTime - lastDrawTime) > kMaxFrameRate)
+	{
+		fInstance->IDraw();
+		lastDrawTime = currTime;
+	}
 }
 
 //============================================================================
@@ -1847,22 +1860,6 @@ hsBool plClient::IDrawProgress() {
 
 hsBool plClient::IDraw()
 {
-	// Limit framerate
-	static float lastDrawTime;
-	static const float kMaxFrameRate = 1.f/30.f;
-	float currTime = (float) hsTimer::GetSeconds();
-	if (!fPipeline->IsDebugFlagSet(plPipeDbg::kFlagNVPerfHUD))
-	{
-		// If we're using NVPerfHUD to step through draw calls,
-		// We're going to have a frame delta of zero. In that
-		// case we need to draw no matter what, and we don't
-		// care as much about starving other threads because
-		// we're presumably just debugging a graphics glitch.
-		if ((currTime - lastDrawTime) < kMaxFrameRate)
-			return true;
-	}
-	lastDrawTime = currTime;
-
 	// If we're shutting down, don't attempt to draw.  Doing so
 	// tends to cause a device reload each frame.	
 	if (fDone)
diff --git a/Sources/Plasma/PubUtilLib/plInterp/hsInterp.cpp b/Sources/Plasma/PubUtilLib/plInterp/hsInterp.cpp
index 092e7496..8495f710 100644
--- a/Sources/Plasma/PubUtilLib/plInterp/hsInterp.cpp
+++ b/Sources/Plasma/PubUtilLib/plInterp/hsInterp.cpp
@@ -404,7 +404,7 @@ void hsInterp::GetBoundaryKeyFrames(hsScalar time, UInt32 numKeys, void *keys, U
 {
 	hsAssert(numKeys>1, "Must have more than 1 keyframe");
 	int k1, k2;
-	UInt16 frame = (UInt16)(time * MAX_FRAMES_PER_SEC);
+	float frame = (time * MAX_FRAMES_PER_SEC);
 
 	// boundary case, past end
 	if (frame > GetKey(numKeys-1, keys, size)->fFrame)
diff --git a/Sources/Plasma/PubUtilLib/plInterp/plAnimTimeConvert.cpp b/Sources/Plasma/PubUtilLib/plInterp/plAnimTimeConvert.cpp
index d0f5e4e7..48b0667c 100644
--- a/Sources/Plasma/PubUtilLib/plInterp/plAnimTimeConvert.cpp
+++ b/Sources/Plasma/PubUtilLib/plInterp/plAnimTimeConvert.cpp
@@ -557,8 +557,13 @@ hsScalar plAnimTimeConvert::WorldToAnimTime(double wSecs)
 			{
 				if (secs > fLoopEnd)
 				{
-					secs = fmodf(secs - fLoopBegin, fLoopEnd - fLoopBegin) + fLoopBegin;
-					wrapped = true;
+					float result = fmodf(secs - fLoopBegin, fLoopEnd - fLoopBegin) + fLoopBegin;
+					// if fLoopBegin == fLoopEnd == 0, result will not be a number
+					if (!_isnan(result))
+					{
+						secs = result;
+						wrapped = true;
+					}
 				}
 			}	
 		}
@@ -576,8 +581,13 @@ hsScalar plAnimTimeConvert::WorldToAnimTime(double wSecs)
 			{
 				if (secs < fLoopBegin)
 				{
-					secs = fLoopEnd - fmodf(fLoopEnd - secs, fLoopEnd - fLoopBegin);
-					wrapped = true;
+					float result  = fLoopEnd - fmodf(fLoopEnd - secs, fLoopEnd - fLoopBegin);
+					// if fLoopBegin == fLoopEnd == 0, result will not be a number
+					if (!_isnan(result))
+					{
+						secs = result;
+						wrapped = true;
+					}
 				}
 			}				
 		}		
diff --git a/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp b/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp
index fc922676..5a710783 100644
--- a/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp
+++ b/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp
@@ -626,15 +626,15 @@ void plSimulationMgr::Advance(float delSecs)
 	{
 		if (fExtraProfile)
 			Log("Step clamped from %f to limit of %f", fAccumulator, fMaxDelta);
-		fAccumulator = fMaxDelta;
+		fAccumulator = kDefaultMaxDelta;
 	}
 
 	++fStepCount;
 
-	// Perform as many whole substeps as possible saving the remainder in our accumulator.
-	int numSubSteps = (int)(fAccumulator / fStepSize + 0.000001f);
-	float delta = numSubSteps * fStepSize;
-	fAccumulator -= delta;
+    // Perform as many whole substeps as possible saving the remainder in our accumulator.
+    int numSubSteps = (int)(fAccumulator / fStepSize + 0.000001f);
+    float delta = numSubSteps * fStepSize;
+    fAccumulator -= delta;
 
 	plProfile_IncCount(StepLen, (int)(delta*1000));
 	plProfile_BeginTiming(Step);
@@ -783,25 +783,21 @@ void plSimulationMgr::ISendUpdates()
 //  RESOLUTION & TIMEOUT PARAMETERS
 //
 /////////////////////////////////////////////////////////////////
-
 void plSimulationMgr::SetMaxDelta(float maxDelta)
 {
 	fMaxDelta = maxDelta;
 }
-
 float plSimulationMgr::GetMaxDelta() const
 {
 	return fMaxDelta;
 }
-
 void plSimulationMgr::SetStepsPerSecond(int stepsPerSecond)
 {
 	fStepSize = 1.0f / (float)stepsPerSecond;
 }
-
 int plSimulationMgr::GetStepsPerSecond()
 {
-	return (int)((1.0 / fStepSize) + 0.5f);	// round to nearest int
+	return (int)((1.0 / fStepSize) + 0.5f);    // round to nearest int
 }
 
 int plSimulationMgr::GetMaterialIdx(NxScene* scene, hsScalar friction, hsScalar restitution)
diff --git a/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.h b/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.h
index 7f85cd1c..5720669a 100644
--- a/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.h
+++ b/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.h
@@ -122,7 +122,7 @@ protected:
 	// physicals and the avatar may move at a faster rate than usual.
 	void SetMaxDelta(float maxDelta);
 	float GetMaxDelta() const;
-	
+
 	// Set the number of steps per second that physics will advance.
 	// The more steps per second, the less fallthough and more accurate
 	// simulation response.
@@ -159,6 +159,7 @@ protected:
 
 	float fMaxDelta;
 	float fStepSize;
+
 	float fAccumulator;
 
 	UInt32 fStepCount;