If you are going to just use it as is, no plug-ins for devices, then th 64-bit version should be fine. Some plug-ins require the 32-bit version. Won't be moving OS until I have to! What makes it worse is that I checked with Apple that Big Sur would run ALL 64-bit applications, but this is NOT the case. Work just fine in Windows 10 32 bit and 64 bit. Some plug-ins require the 32-bit version.
Just happy to be back in Mojave with everything working again.
I had the same problem with Acrobat Pro XI but if and when I have to move to Big Sur (or later), Readdle's 64-bit PDF Expert for Mac seems to do everything I need. I am exploring whether I can use Skylum Luminar, Affinity, or DxO instead. As an amateur Photographer (and being retired) I can't justify the CC subscription when CS6 does all, and more, than I need.
I had a real problem reverting to Mojave from TimeMachine but got there in the end with telephone support one Sunday from Apple in Dublin. I guess there are 32-bit parts in the Application Libraries or elsewhere. Quote: So it is a normal thing and I can just select the 64 bit option each time and ignore the 32 Unless you have plugins that dont work in 64-bit, yes. Looking in 'About this Mac' shows Adobe Photoshop CS6 as 64-bit.