What's the latest on this issue of Big Sur slowing down or creating havoc with iMac Pro's? I'm running a late 2019 iMac Pro, 10 core, 64 GB RAM, Radeon Pro Vega 64X 16 GB, 1tb, still running Mojave. The "upgrade" to Catalina caused crashing, slowness and wasted time, so I rolled it back to Mojave and have not had any issues. Should I stay with Mojave or perform the upgrade to Big Sur? Thanks
ATL_Jim
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