It seems ok so far. I did a manual scrub the day after I installed it, and it held up. However in the past I was able to do a manual scrub, and when the automated scrub happened it went down.
After the last clean install without using the backup settings and only importing my pool It seemed to calm down for a couple of months and then all of the sudden it started flapping again. It after that it stabilized somewhat. I'm anxiously anticipating the next scheduled scrub.