We recently upgraded from a MacPro to a 14.2 iMac with fusion drive and 16GB ram. When going to a different app, then switching back to PM 4.6.9, we are unable to control PM for 25-30 seconds. I am also seeing a 10-15 second delay when trying to check mark the photos.
The photos are stored on a Cifs/SMB share on a NAS. This is the same response even if the file is local. File size also does not impact this.
No AV currently running on the system.
I realize that 4.6.9 is older, but I'm nervous about upgrading, as I see people reporting the same issues with 5.