Update: I tried it with these values. Looks OK for the most part of it. KOReader looked much better after restart. However, some apps need adjustments. For example, my custom jbak2 keyboard did not adjust well although it button sizes are given in percentages from the total width. So it doesn’t know about the overscan stuff. I might ask the dev about it.
Also, I can just try changing “wm size XxY” where X and Y are the same as original res, but each 10 px shorter
