A nasty bug with tabbedDialogs in 3dsmax 2022 meant that 3dsmax would often fast-exit when using the main 3dsmax render dialog along with RPManager - this contains a workaround:
http://www.rpmanager.com/installers/RPM ... p_7.24.exe
The bug doesn't affect 2021, seems new - essentially if you set the renderer dialog to restore a particular tab, it restores the next one along. As a result you may sometimes see it change from tab 1 (common) to the next tab along - I can detect and restore if it isn't what it should be, but unable to set to tab 1. Should be mostly harmless.
If this does or doesn't work for you please reply here.