@J453 , hey man, thanks, removing the histogram was a good idea. Helped. However: since the histogram is one of the most important things up there and I won't miss it, please forgive me not marking this as solution, because it's only a workarond, sacrificing the histogram. FYC: I found an old MBP13, early 2015, running macOS Catalina, Intel blablabal graphics only, updated everything Adobe related and it was smoother as on my MBP 16, i9, 2019, Radeon 5500 Pro, 8 GB. Probably those performance issues are caused in relation to the macOS version.
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