Interesting… is there any way you can provide a screenshot of what’s going on? My first instinct is that maybe the window gets resized but for some reason the resize event isn’t getting triggered.
I'll try to see if i can reproduce the issue, but it may take awhile to get back to you with it as I'd have to wait for the game to be running for a long period of time (also considering the facts that the variables that may have caused the issue may be hard to replicate, for example, if the application should be minimized or left open in the backrgound for the issue to even appear)
May I ask how long it takes for this to occur? Minimizing doesn't seem to matter on my end, but there could potentially be color precision issues after 2 or 3 hours for the NTSC effect, because the frame counter is unbounded. I would try replacing this on line 605 of CRTFunctions:
_frame_acc++; _frame_counter = _frame_acc div max(1, floor(game_get_speed(gamespeed_fps) / 60));
With this:
var _div = max(1, floor(game_get_speed(gamespeed_fps) / 60)); _frame_acc = (_frame_acc + 1) mod (32768 * _div); _frame_counter = _frame_acc div _div;
Let me know if that works out, and I can update the pack if so!

