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Memory problems when running Zoom on a Mac


I have an iMac with an i7 Intel chip, 64 GB of RAM, and OS Ventura (13.6.5). For the past couple of months I've been having what appears to be a memory issue when running Zoom. Zoom becomes only partially responsive and everything else I'm running slows down significantly. I have to either close everything else that's running or leave the meeting and come back. I've done a hardware check and the RAM and chip are fine. Internet connection is fine. 


I also have a MacBook Pro (M1 Pro chip, 32 GB RAM), OS Sonoma 14.3.1 and am not having any issues with Zoom.


I think the issue with the iMac might be the OS – has anyone else had a problem like this? If you have, is there a fix other than shutting everything else down? Thanks!