I am having lines on the screen bottom issue, it looks the exact same.

huntfromcdc

I have had lines across the entire bottom of the screen before and fixed it, but I cannot find what I did. I have reinstalled the adapter driver and turned off/on gsync. My laptop is the predator triton 500. When I fixed the lines across the entire screen before, they only appeared as half the screen and I was able to make them disappear by changing my monitor to 60 and back to 300 Hz. How can I fix this?

https://community.acer.com/en/discussion/606061/horizontal-lines-on-the-bottom-of-monitor-z271u

[Edited the thread to add the title]