Minor bug on slower systems

Sorry for the rapid succession of updates, I try to avoid it, but I found this one very important.
I didn't sufficiently consider slower systems (like the Raspberry Pi) in the latest update.
The "Last UI update" attribute had to be removed because of this.

This will not affect further operation, except for resolving the slow status updates (#104) that sometimes occur.
These slower systems should no longer encounter this error. Thanks to @175653 for the bug report.