Sometimes the system will freeze for a few seconds in Finder, Safari or performing other tasks. The only problem with this is, some users have reported other GPU related weird issues in 10.15.4. UPDATE 4/28/20: The consensus amongst users is upgrading to Catalina fixes the issue. I will update you as soon as I have more information. I am trying to find out if it includes a fix for this issue. UPDATE 4/29/20 – Today Apple released the Developer Beta version of 2020-003 Security Update for Mojave and High Sierra. I am hoping the update is released tomorrow or sometime this week! If you installed 2020-003 Beta and it fixed the issue for you, please let me know. The 2020-003 Security Update is looking really good, but I still would like to see more confirmations. Today I installed 2020-003 Beta and did not see a single crash for over 6 hours on the same meeting. I experienced a freeze & 5 different app crashes on a multi user meeting. UPDATE 05/18/20 – On Friday I tested Zoom client v4.6.8 on a 2017 MacBook Air with 10.13.6. Please let me know if the new update fixes the issue for you!!! UPDATE 05/26/20 – Apple has just released the 2020-003 Security Update for macOS Mojave 10.14 and High Sierra 10.13. After Apple Released the 2020-002 Security Updates, some users started to report that their Mac would would freeze up when using GPU Hardware Accelerated apps or video. Some Intel GPU Only Based MacBooks Airs are Freezing / Crashing while using Video Conf apps like Zoom After installing the 2020-002 Security updates.

My imac keeps freezing