I'm afraid I have no idea whether this is a software or a hardware
issue, though I'm increasingly leaning towards the former and was
wondering if this was a known thing.
Essentially, my problem is this: When running some programs, I
experience white spots/lines appearing on the screen, seemingly at
random. I've attached a video to this post, because I have great
difficulty describing them well. Feel free to mute it; I should have
done that when I uploaded it!
Hardware-wise, I'm using a Geforce GTX 1080, and the driver version is
436.51. Geforce Experience is installed, and the overlay is not
disabled. I'm running Windows 10 (v10.0.18362 Build 18362, fully
updated), and all my other drivers and firmware have been updated. My
monitor is an Acer Predator X27.
Now, strangely, if I turn GSYNC *off* for Spotify (the application that
the video shows, though it is also affecting at least one other
application), the issue seems to resolve completely. I also seem to be
able to fix it by turning off hardware acceleration in Spotify.
I'm curious to know whether this is a software or a hardware problem -
could it be a driver issue, or is it an issue with the GSYNC module in
the monitor or the graphics card? The monitor is still under warranty,
but I don't really want to return it if there's nothing wrong with it...
Any thoughts would be appreciated! Thanks.