I tried installing this today with Bevo's Tech Pack and for some reason it made things much worse. I normally can get about 10-15 FPS without Optifine. I installed this, and couldn't get over 3 FPS. Am I doing something wrong? Is there a configuration somewhere that I need to tweak?
Edit: Ok, so it wasn't the mod causing the issues. The server updated and something in the new version of BTP is causing the frame rate issues. I'll track that down first.