i am using the ESR version and the slowness definitely exists here.
The slowness accumulates after the infinite scroll loads a lot (e.g., the subscriptions page or the home page, or comments). Refreshing fixes it, but now you've lost the old position and have to re-scroll back (which, causes the slowness once again).
The slowness accumulates after the infinite scroll loads a lot (e.g., the subscriptions page or the home page, or comments). Refreshing fixes it, but now you've lost the old position and have to re-scroll back (which, causes the slowness once again).