Describe the current behavior
Right now, after roughly 40 minutes working within a Colab notebook, I notice severe lag when attempting to scroll through the document. Syntax highlighting seems to freeze up occasionally, as well. Refreshing the page resolves the issue until it reoccurs.

Describe the expected behavior
The smooth workflow experienced when entering the page, or after refreshing the page, continues indefinitely.

What web browser you are using
Brave; I've also noticed this issue in standard Chrome and Safari.

Additional context
Trying to sort this out myself, I noticed a very substantial number of "analytics logging failed" messages. The rate at which they appear seems correlated with the rate at which lag occurs, and seems to increase over time. I'm not certain that this is the root cause, but adding a graceful failure mechanism after repeated failed calls to /analytics might be helpful anyways.