Hi, I've been trying to solve this issue for the past several months with no avail. I tried configuring some settings via about:config with: gfx.webrender.compositor - false widget.windows.window_occlusion_tracking.enabled - false I also unchecked both "Use hardware acceleration when available" and the "use recommended performance setting". Essentially, I want to be able to watch movies/videos on sites like Netflix and Hulu. Right now only a black screen shows with the audio playing or the screen is frozen in one scene and the audio continues playing. Does anyone know what else I can do to solve this problem?