We are using WP Dark Mode 5.2.11 with Astra theme and found that after scrolling forward and backward in pages / articles the response time was increasing. It is the result of a browser memory use going up to 5Go (page around 7Mo). Having deactivated WP Dark Mode the behavior returned to normal (fast and memory consumption under reasonable limits).
I have just have been able to test today for not embarrassing users. I do confirm that disabling Track Dynamic Content makes the web site to be fast again.