Big Sur - Control Center is crashing every second.

An update: When I found the Control Center section in Settings, and started turning off what was displayed in the menu bar, and switched off the Battery entry, everything quieted down, and Crash Report stopped running.

Just so you know.

I had to disable fast user switching on my iMac to stop it crashing like that

Same here but I cannot find the ControlCenter in the menubar as the rightmost part of it does not show any icons except for Spotlight. I'm lost.

Fast user switching is off by the way...

My menubar icons are back.
Accomplished that by turning OFF WiFi in System Preferences -> Dock & Menu Bar 

Thanks!

This doesn't seem fixed in the current release. @bilm's advice is the one that did the trick for me. I started noticing the issue because my escape key was getting captured by an invisible window and didn't think about looking in Activity Monitor 🤦.

I rescind my previous reply (can't edit, sorry). It doesn't seem fixed at all. Removing things from the menu bar seem to reset the issue, but it eventually comes back.