Every time I open minecraft my video settings reset to the default that is “recommended” for my computer which is the max render distance and everything is turned on. I prefer to play on vibrant visuals without rendering clouds and I have to set it to that every time I load the game. The default for the game for me is fancy everything and 96+ chunks render distance which causes my computer to crash.
This is likely caused by the NVIDIA app. See MCPE-232673 for more information.