I am playing MTG Arena on PC (Windows 10). I have consistently been experiencing issues where MTG Arena will not save the selected display resolution size. My display has a default resolution of 2560x1440px, however I am trying to run MTG Arena in Fullscreen 1600x900px to be easier on my computer. When I apply the setting to go to 1600x900px, the game eventually (usually within minutes, while in matches or adjusting decks or doing anything) reverts to 2560x1440px, despite me not adjusting this setting. I was wondering if there is any way to fix this issue?

My system is a laptop, but it has an i7-7700HQ and a GTX 1060, so I believe it should be able to run the game with no issues. I also use an external monitor, however I run the game (in fullscreen) on my laptop's default screen.

Thanks, any help is much appreciated.