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Drivers & Software

Journeyman III

Flickering black lines when using custom resolutions

Hi everyone, first of all sorry for broken english

As you read in the title I get flickering black lines across the screen when using a custom resolution (1728x1080 16;10).

However this only happens when the monitor is set to use 240 hz if I go below that I can use the custom resolution just fine.

Also I can use the custom resolution 1440x1080 (4:3) and 1920x1080 (16:9) at 240 hz perfectly.

Hope somebody can help me here are my specs:

Drivers: 20.2.2

GPU: R9 390

CPU: I7-4790

Monitor: acer predator kg271b 27" 240hz


I know the videos are in really bad quality but you get the point xd