for context on both images first.
image one is from last night had to take a close up when showing my friends and stream partners that these feint lines where on my screen. annoying but manageable. I've only had this msi monitor for a year or two after my dad gave it to me should be a few years old not as old as my second monitor.
the second image was taken this morning when i got back on and turned the pc on. changing the refresh rate didnt remove the faint lines just the more noticeable stuff.
i have tried changing the refresh rate like i was instructed to i tried swapping cable as well. my second monitor seems fine on all hdmi cables and ports to the pc itself and changing the cables for the main monitor (the problem child here) shows no sign of fixing the problem. is the monitor just dying or is there anything else i can do.