Sudden issues with 1080p 240 hz mode on PC
I'm using the M50qxm-k01 as my computer monitor. Most of the time I have my PC set to 2160p, 120 hz but for certain games I use the 1080p, 240 hz mode. It was working fine earlier today, then I ran to the store. When I got home and turned the TV on, the bottom 2/3rds of the screen was full of red lines. After I managed to blindly set the resolution back to 4k, the screen went back to normal. Now, 1080p suddenly only works at 120 hz. I kept getting these red lines when switching to 240 hz. I managed to fix that by setting the resolution back to 4k, 120 hz and then switching my refresh rate in the windows settings to 240 hz, which forced the resolution back to 1080p. That fixed the red lines, but the whole screen is now getting compressed on the sides. I have absolutely no idea what's happening or what caused it. 120 hz vs 240 hz isn't really that big of a deal to me, but it's so frustrating when a feature that was working fine suddenly refuses to work at all half an hour later.