BtRL is completely unplayable with this build. The first mission alone drags on the FPS so bad, it,s like flying through syrup once the furball is on. The waypoints do not update properly, I loose targeting and any attempt to target anything gives me a "Disengaging Targeting System", so I have to eyeball it....which would be fine if it wasn't for the molasses effect.
At least it doesn't crash. I will give it that much. But then, I cannot get through the first mission.
BtRL was just installed and updated. No modifications to anything: I copied in the posted EXE from here and executed it directly.
All other builds (including the built in one) work fine.