all of the color and gamma etc options work great, but as others have mentioned, it bugs the video playback. playback becomes choppy and skips probably 3 out of 4 frames. disabling it immediately fixes the problem
It still seems to lower the framerate of the video. I also checked Task Manager, CPU usage on firefox goes from 8% to 15%. GPU usage stays untouched. (Tested on YouTube)
I really hope it can be solved because otherwise the addon is fantastic.