Hey! I have a RTX2080 super video card. When editing, I turn on the mercury playback engine gpu acceleration (CUDA) in the project settings. I work fine for a couple of hours, but then the preview window just goes black when the video card heats up to about 60 degrees. Today this mode was enough for me for a couple of minutes, then the screen turned black again. I switched to mercury playback engine software only. And it became unbearable to work, as everything hangs.