Hi Mark, I'm running a MacBook Pro (Retina, 15-inch, Mid 2015) with Mojave 10.14.6 (latest). I've always had location services off (including all system services within). I haven't seen any jitter issues on my end. Along with, no matter if I have bluetooth turned on with my wireless mouse and keyboard connected or not, I see no consistent change in jitter. Even further, enabling location services (including all system services within) and bluetooth enabled, I'm not seeing any change in jitter. I know you said earlier this issue seems to have started somewhere _around_ Mojave so just my two cents. -Aaron Oct 30, 2020, 12:08 by mark.tinka@seacom.com:
Hi all.
So I may have fixed this for my end, and hopefully others may be able to use the same fix.
After a tip from Karl Auerbach and this link:
> https://developer.apple.com/forums/thread/97805
... I was able to fix the problem by disabling Bluetooth.
However, disabling Bluetooth was not enough. I also had to disable all Location Services.
After that, I re-enabled Location Services and only allowed for two features:
- NetSpot - Find My Mac
With just those two location services, as well as Bluetooth disabled, I have no more high jitter.
App performance like Zoom and Youtube uploads are now crisp, with 0.0% packet loss.
So looks like that Bluetooth is a huge problem. Confirmed by opening the "Console" app, and adding "scan" in the filter bar, top right.
A peak latency of 13.5ms after 300 packets:
Marks-MacBook-Pro.local(172.16.0.239) 2020-10-30T21:06:05+0200 Keys: Help Display mode Restart statistics Order of fields quit Packets Pings Host Loss% Snt Last Avg Best Wrst StDev 1.172.16.0.254 0.0% 300 3.1 4.8 2.2 13.5 1.9
Mark.