Tiny UI on new computer

[ald232]

I just used the el Hefe video to successfully load EQ onto a new lenovo legion 5i. Once I changed the options to my computer's resolution (2560 x 1600), the UI got very small, though everything else is really crisp. I tried in both full screen and windowed mode. when I try tweaking settings, I can sometimes get the UI larger, but only if the window is a portion of the screen and heavily pixelated (for instance, full screen mode at 1152x864 gives me a large UI, but I lose the sides. full screen mode on 1280x720 looks almost right??). I read a bunch of posts here and elsewhere about custom UIs or updating dimensions in exe files, but not how to actually do that. I don't want to mess anything up, as I have done in the past on old computers, and don't know which method to try or how. I think I have an OLED display, so I don't know if posts about 4k apply to me. Could someone pleaseeeee give me a fool-proof step by step on how to fix this? Like exactly which file to open and how to modify etc. if that is the fix? I am not tech savvy and most posts I can find on this are either old and/or don't spell out the steps. MUCH appreciated!!!!