I'm sure you guys are aware of that occasional hole that drops significantly in fps, then the next few holes might be just fine. Usually, I get around 35 to 45 fps and that works fine for me. But, every now and then I'll get that hole that drops into the low to mid 20's.
If you push F5, then lower the scene just a bit, you can get thru those holes pretty easy without the mouse lag. Here's a short video showing what I'm talking about. Notice in the upper left hand corner the fps change. I can get it from the low 20's to 50's with just a slight move down with the mouse.