RootlessCosmopolitan
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Display lines on 27-inch iMac may be Radeon Pro 5700XT GPU issue
cdoubleu said:I have experienced graphical glitches consisting of triangles and lines on my 2020 iMac w. 5700XT. It requires a reboot to resolve them. I am also experiencing crashes where the whole system becomes unresponsive also requiring a (hard) reboot. I can replicate this consistently by playing Civ 6 - it typically freezes 20 minutes into a session.
I reset SMC & NVRAM but the problem persists.
My 2020 iMac:
・2020 27-inch iMac
・3.6 GHz 10-core Intel Core i9
・32 GB RAM
・AMD Radeon Pro 5700 XT 16 GB