this is awesome

It's an issue with the Intel Integrated UHD Graphics 620. I switched to the on-board NVidia Quadro p500 and it has no issues. I'm going to see if updating the Intel driver solves the issue.

hey sorry to keep posting! i discovered it goes away on fullscreen. it also happened to another game i got on itch.io. it's gotta be something weird on my end, but i'm clueless. thanks for responding and i love tic-80!

For what it's worth, the retroarch tic-80 core works fine for gameplay, doesn't have this issue. sorry!!

Quadro P500 on a ThinkPad P52S laptop

Quadro Desktop/Quadro Notebook Driver Release 450

Version 452.06

sorry to bother! I have tic-80 on windows 10 (0.70.6) and i'm getting a bunch of 'scanline' artifacts rapidly flashing making it nigh unusable. forgive my ignorance if this is a solved problem that i've overlooked!

here's a link to a capture of what it looks like: 

imagine those lines just rapidly scrolling. 

thanks!