brec

I have basically everything stored in my home folder; 624G worth. I removed MWB last month.

Here we went -- thanks for that followup!

OK, thanks for letting me know that .12 doesn't fix it. I haven't had MWB installed for about a month.

A little more than a week ago I uninstalled MWB because RTProtectionDaemon was taking more than 50% CPU. As there hasn't been any new release -- I have 4.6.11.3824 -- today I cancelled autorenewal of my subscription which would have triggered tomorrow. Just to make sure the problem wasn't transient I just reinstalled it and observed 53% CPU, and then again uninstalled it. I'll check from time to time for a new release.

What's "acceptable"? I was seeing CPU% in the mid-50s before I uninstalled MWB.

I was unclear -- I was referring to my slow-apps-opening problem that I had even after uninstalling MWB and thereby getting rid of RTPD. Indeed a workaround for the oscd.apple.com issue that GuruGuy linked to did solve that problem. MWB is still uninstalled here.

Seems like that has to be it -- thanks!

Uninstall got rid of RTProtectionDaemon, but after restart, the auto-start applications -- the ones which populate the right side of the menu bar -- are very slow to open. Then a lot of manual-start applications are "bouncing doc icon slow" to open, at least the first time. Some seem to normalize for subsequent opens (cached? wild guess).

P.S. The MWB application takes 12-15 secs. with its icon bouncing in the Dock before its window opens. I uninstalled MWB. The uninstaller left these behind: com.malwarebytes.mbam.uninstaller.plist com.malwarebytes.mbam.uninstaller.bom com.malwarebytes.mbam.frontend.application.savedState com.malwarebytes.mbam.frontend.agent.plist com.malwarebytes.mbam.frontend.application.plist

Today my Mac Mini w/ MacOS 10.15.7 slowed to a crawl. Activity Monitor showed RTProtectionDaemon taking about 55% CPU with spikes to 100%. I uninstalled/reinstalled MWB 4.6.11, no joy. Based on this thread I see no solution. Is that correct? My subscription expires in 9 days, just sayin'.