This is an update to the previous Mac Radeon GPU bug. Just an FYI, I don't realistically expect a solution from either Apple or Adobe.
16" 2019 Intel MacBook Pro
AMD Radeon Pro 5300M/4GB
16GB system RAM
Tahoe 26.0.1
ACR 18.0.0.2389
I am still seeing the intermittent GPU issues that were first reported in macOS Sonoma, where the ACR document window shows distorted or black images of RAW files. It doesn't happen often, but popped up again yesterday when I had four Canon RAW files (2 CR2, 2 CR3) open.
The fix is to restart the computer, presumably this is a memory problem in the GPU. Beyond this, Tahoe and Adobe CC are working as expected without major issues. Performance has not changed appreciably from Ventura->Sonoma->Sequoia->Tahoe or with new CC versions.
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