Slow movement speed using Crafty's sfall1

[Sduibek]

I noticed if I use Crafty's most recent version of sfall1 (1.7.6), movement speed of my character is very slow at all times.

This is even with game speed put at 120%.

I renamed ddraw.dll, and confirmed without ddraw player movement is nice and fast.

Does anyone know how to fix this?

EDIT: I found the culprit. ProcessorIdle=1. If you set that to -1 it's no longer an issue.