Print stutters when logging in from another machine

I just upgraded to to OctoPi 1.3.10 tonight. While in the middle of a print, I logged in to check the status from another machine and noticed my printer stutter. I checked the CPU load and it spikes to 100% usage when someone hits the login page or after they authenticate. I've never noticed this before. Is this a new issue with 1.3.10? Is there a way to downgrade back to 1.3.9?

1.3.10 is Octoprint, not Octopi. I assume you are on a Pi, what version? What does vcgencmd get_throttled return, or what appears under the "lightning bolt icon" on the printer's page?

Sorry, Yes, Updated Octoprint to 1.3.10 on a RasPi 3B if memory serves.

I get this on the vcgencmd get_throttled

error=1 error_msg="Command not registered"

I'm not sure what you mean be "lightning bolt icon" I don't see that anywhere.

Lightning bolt should be on the toolbar:
09%20AM

That message ("command not registered) makes me think you are typing get_throttled wrong. That's how I can reproduce the behavior.

Or it's a really ancient OctoPi version (I'm not sure when Raspbian stock added get_throttled, but I'm very sure it wasn't there from the get go).

Would a sudo apt-get update && sudo apt-get -y upgrade help?