This is my set-up iMac Processor: 3.2GHz Intel Core i5 Memory: 24GB Graphics: NVIDIA geForce GT 755M 1024MB I might have to revert back to the 2018 version just to be able to work at a reasonable pace. ... View more

https://forums.adobe.com/people/Axel+Matt  wrote Go to Lightroom > Preferences > Performance tab > Uncheck "Use Graphics Processor" > Restart Lightroom. I tied turning off Graphics Processor acceleration but it is still slow.  Also tried "Use smart previews instead of orginals"  to try and speed things up but it's still painfully slow !! ... View more

I also have the same problem.  Lightroom Classic is now so slow, it's almost impossible to do any processing.  Did anyone at Abobe test this update before it's release ?  It's the same with InDesign.  What is going on?  How could this suite of products be released with so many bugs? ... View more