当我用了它之后，视频就不能倍速播放了。

Disables playback speed on Youtube.

If I speed up a video with a boost on audio, i can't keep with the video in the speed up time. Like, I put a video on YouTube in 2x then speeded up, then the video plays in 1x only. I tried this on Hotmart too and happened the same.

Very little increase on Facebook video?

Please add a feature to set default volume for specific websites. Also video speed controls doesn't work when this addon is active.