LMS web interface keeps becoming unresponsive on Debian 10

I've always run the current version of Debian without issues for the last 10 years or so, but since upgrading my LMS server to Debian 10 (Intel x64) I've noticed that the web interface keeps becoming unresponsive for periods of about 10 seconds, and then it catches up. In some cases the music will also stop during the periods it's not responding.

Running LMS 7.9.2-1562753347 on minimal Debian 10 Intel x64.

Any thoughts?