Screen Bug on iMac with OCLP

Hi guys,

So I installed opencore on two Macbooks and this iMac. All Macbooks work fine except this iMac, which sometimes does this screen bug thing. Sometimes I use it for hours, and when I open a new app it starts this bug, and sometimes it does it on the login screen. It's very random. Any tips on what to do with this issue? All root patches are installed and the latest version of OCLP is installed as well.

Specs: iMac 2009 Mid

16 GB RAM 1066MHz

Intel Core 2 Duo 3,06 GHz

ATI Radeon HD 4670 256 MB

Native support: High Sierra

Opencore: Big Sur installed

submitted by /u/Ill_Challenge2822
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