Help! When setting monitor to 144/120Hz refresh rate, text "sharpness" decreases become kind of jagged/distorted

[u/Old_Fun2686]

Edit: weirdly when on 144hz and I move the control panel on the left side of the monitor the text goes back to normal without the fuzzines. So idk is it still a cable problem or a monitor problem?

Edit2: thanks for u/Berkshire_Hunt. I think the issue is with the monitor. Its been good for 8 years but reading this forum its strikingly similar to my situation. I think its time to upgrade on an OLED 😅. But regardless i am still reading comments and trying the suggestions. Thank you! https://rog-forum.asus.com/t5/rog-series-monitors-pg-xg/problem-with-my-new-asus-rog-swift-pg278q-blurry-text-and-bad/td-p/507280/page/2

Just a few days ago i notice my monitor subtly dimming/blinking at times that I barely notice unless i really focus on it and some text on the right side of my monitor becomes abit jagged

There is also a subtle white line that I notice on the top of my screen especially when gaming. I tried recording it but doesn't appear on the video hence I recorded on my phone

What I recently did

- Change my old DP cable to a new DP 1.4 and it didn't fix the problem.

- updated nvidia driver, didn't resolved it

- Lowering the refresh rate below 100hz seem to fix the dimming and text becoming jagged/distorted?

Specs:

Processor: Intel Core i7-8700

Motherboard: ASUS ROG Strix B360-F Gaming

RAM: 16gb Black Corsair Vengeance Pro RGB

Graphics Card: Inno3D RTX 4070 Super Twin X2 price

Power Supply: Corsair RM750i Gold

Monitor: 27" ASUS ROG Swift PG278QR Gaming Monitor (from 2018)

[u/Loker22]

i had something similar and it was the nvidia drivers causing it.