Heavy CPU Throttling when using Video chat applications
Hi y’all,
Recently I’ve been running into issues with my 2018 MB Pro 13in, touchbar. Whenever I launch any video application (i.e. Skype, Zoom), after around <5 minutes my CPU would throttle down to either 0.4 or 1 Ghz. Zoom or Skype would freak out by saying that “your input device has changed”. Zoom says the same thing and an error message “Zoom has encountered an error and needs to be restarted”. I’ve tried smc + pram reset and so far Skype and Voice recorder started working again, however Zoom is still crashing from the same error(works fine on my 2008 and 2012 MB Pro). Has anyone seen CPU throttling or microphones causing behavior like this? I’m just concerned because ~1.5 months ago I got my keyboard replaced under the program, and I’m just scared that they f-ed up the microphone array. I’m fine with digging around and taking apart stuff, it’s just that the newer models of MB Pros aren’t the most “disassemble-able”.
Thanks :D
P.S. I have yet to try reverting to Mojave or a Clean OS reinstall, might try that if this gets out of control. I’m not sure malware would cause this type of behavior, but I guess a “Factory reset” would eliminate that possibility
Update (04/23/2020)
Okay, so I loaded up bootcamp and everything seems to work okay in Windows. I guess something went weird with my macOS installation when I did internet recovery, so I’ll probably be reinstalling the OS.
Ist dies eine gute Frage?
Have you tried unchecking automatic graphics switching?
von Chris Stables
@imicrosoldering - The 13" only has the Intel Iris Plus Graphics 650 services. The 15" is dual graphics (AMD Radeon) and altering the graphics switching under energy saving would then work.
von Dan
Yeah I have the 13in. One thing I haven't tried out is checking if the same error happens in Bootcamp.
von watercannons
Did that help? I'm having the same issue in my MBP 2015, 15"
von Shehan Gunarathne
It didn’t necessarily help, I think I just ended up doing a backup with time machine and reinstalled macOS. It was just a way to isolate the issue to software and not hardware. Since everything was working in bootcamp.
I was in a rush and couldn’t find what was actually causing the “throttling” (the only thing I’ve seen that does similar CPU throttling is when you use certain original Apple batteries on a 2012 15in Unibody MBP).
von watercannons