well, i've narrowed down the problem to a specific set of circumstances (i think)
when switching to full screen, if I switch to 720 or higher AFTER switching to fs, it crashes; if i switch before going fs it doesn't crash
again, this is tentative; it is a strange bug
but, i just tried it several times and it worked when i switched to 720 before going fs
so,t here, lol
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