Proxy generation is problematic
When starting a project with a gopro video, the playback is stuttering. I can see that a proxy file is generated. When it is done, The playback speed of the proxy is wrong, it is playing at about 2x the normal speed. When disabling the proxy, the video speed is right but stuttering because cpu is maxed out. When enabling proxy again, the speed is too fast again.
Also, the menu entry for the proxy behavior is erratic. Sometime the tick mark is present but the proxy is not used; another time there's no way to enable the tick mark next to the menu entry.