Turn off Activity / Dashboard / Massive CPU Spike on Activity

Hi All, I recently became a life-time member and upgraded to a new Mac Mini on my PMS from and Mac Mini. The new server is 3.2ghz/6-core/16gb-ram/16tb of SSDs. I run the PMS latest version. MacOS Mojave. The Plex Web app, on average, uses around 150mb of ram which isn’t a big deal (though pretty high for a chrome tab).

Unfortunately, in the latest Chrome, if I open the Plex tab and there is any activity, that activity/analytics page causes the CPU to spike past 5-10% and the page to freeze. Over time, it can calm down and I can navigate away from it.



I did some research through developer console and it appears that the biggest culprit is that the default Activity bandwidth monitor is set to real-time which fires off every (!!!) 2ms a query. Turning that to last 12 hours significantly drops this page from being a bully to just a peaceful pig.

  • Have others experienced anything like this?
  • Should I switch web browsers?
  • Can I turn off Activity?

I’m tempted to ask for a refund over this feature.

p.s. I found another article, now closed, about ram spikes at Massive RAM Usage in Activity Dashboard - #54 by BlayZin but it was not so much an issue for me with ram.

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I may have found a bigger issue… but I followed the instructions on how to copy over one Plex installation to another on your PMS and all of these issues I had above were from the cloned PMS configuration. I re-installed the entire PMS and since then I’ve had less issues. I am not sure what was going on but the fresh install has let Plex remain under 5% CPU when not dealing with transcodes.

Hope that helps. Was pretty easy to reinstall but a pain for people who had shared media folders as they had to jump through some hoops to re-add new shares.

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