Custom Resolution Utility (CRU)

[amac]

I have a damaged lcd such that the first 30 visible columns of the display are damaged and only show compressed squiggly vertical lines. Essentially those columns are no longer usable. This is a 16x9 1080P touchscreen HP laptop. Damage was incurred due to poor manufacturing that secures metal hinges and metal display case via ultra thin layer of plastic that snaps on the most gentle opening of display (but that's a different story). I rebuilt the laptop but the damage occurred when the hinge tore across the screen from the inside.

Using CRU I've reduced the horizontal width of the display by 60 pixels to 1860 (essentially subtracting 30 pixels from the left and the right). This eliminates the bad columns from view and so the screen looks fine. You would have to stare closely to realize it isn't the original full resolution.

I've searched this forum for others with a similar issue but to no avail (perhaps because I can't think of a keyword that isolates the issue sufficiently).

I have 2 questions.

1. It it possible to only eliminate the bad columns on the left side (I haven't played with horizontal left/right porch yet). I'm not sufficiently familiar with the terminology of many of the values that can be changed

2. Most problematic is that I play some older games on this laptop. Some of them do not like the custom resolution and misbehave or seem to ignore it and so I see some of the damaged pixels again.

Any recommendations to avoid these issues?