Increasing Speed for Fast Forward

Hello, I am in need of help. I recently downloaded OpenEmu on my new MacBook but I’m having trouble with the speed up feature. I had what I believe was called OpenEmu2 on my old Mac and that one had a speed up feature which was very fast. On my new computer, the speeding up is significantly slower. Is there a way to increase the speed of the fast forward mechanic on this. If there is any solutions please let me know. Thank you