Actually affects all versions:

With RTX now beeing released, im experiencing very low fps because its locked at 4k, which does not play well with a 2070S, whatever this is a bug or not, this definitly is an issue which makes playing with RTX on unplayable, and im not willing to change the general resoulution to 1440p in the windows settings everytime and change it back when i close the game again, this needs to be an option as quick as possible. (especially since this already a thing in java edition)