I used the same fix you linked to in your post, yet I haven't experienced any issues launching from 3booter. The FPS limiter has also been functioning normally since I applied the fix. The method seems to work as described in the thread and I didn't observe an overall decrease in graphics quality.

Did you add the missing parentheses after you pasted the replacement code? I'm clearly a big fat n00b, but I imagine their absence might cause problems.