Progressive lag time with all Anki functions

The 2 most recent Anki updates for Windows 10 I have had the same issue. The app works fine when I first open it but after 20 minutes or so each card gets progressively slower to lag, pictures get slower and slower to load, and even editing cards there is a HUGE lag between key strokes/clicks and the command processing. If I close out of Anki, it works fine when I reopen it again but like clockwork the problem begins again ~20 minutes into studying. I have tried suspending all add-ons and it still happens. I tried uninstalling and reinstalling the Amboss add-on, and it still happens. Any other advice?

High memory usage could be the culprit.

Try switching to the ANGLE video driver from the preferences screen.

Please let us know if that helps.