F1legend

okay for both these games i went to launch options and manually set the Dxlevel to 81. so when i start either game, the resolution is fixed at 1024, and i manually have to switch it everytime, along with AF and Shaders. it doesnt save. my question is how do i set everything to defualt, so there is no dxlevel when startup, (and please dont say set to dxlevel 90 becuase this lags the game and also makes the resolution or whatver graphical things i do not save and revert to 1024). thanks guys