Don't remember having these issues only with 800x600 resolution or something but might as well just use Widescreen fix and it won't be a problem at all.

What is your game capture resolution in slobs/obs? Do you use in game resolution at 1280x1040?

Because 1280x1040 (something like that) is the most optimal, at least for me. Also widescreen fix doesnt work.

i fix it,thx for reply