Is a amd A10 with R5 graphics, tried running on a desktop too but takes both monitors as the screen wide and the game is placed half on each monitor, I guess there is something weird on the fullscreen part.
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I'm not sure how to fix your lag issue, but I can upload a windowed mode executable to fix the fullscreen issues. I'd just program in an F11 shortcut but the game was only made for a jam, so if I were to continue updates for it I'd probably just do the whole thing from scratch to be honest. Thanks again for the feedback!