/vr/ - Retro Games

>>8980189
This happened to me years ago with the mod, "Nihilum." It was hilarious, but impossible to play since I couldn't control my movement with any amount of precision. It may have actually been going faster than double speed for me. It's been too long for me to remember the fix, but it had something to do with DirectX.
Get Kentie's launcher http://www.kentie.net/article/dxguide/
That alone will probably fix it or allow you to toggle something that will. I'd also recommend New Vision and HDTP. They don't change the gameplay at all; they're just subtle visual enhancements.