After playing for an hour or so, I will notice a significant drop in DPS. Also noticeable is that flurry is either attacking a lot more slowly or 2/3 of flurry’s hits stop registering. The most obvious way to notice this, for my build, is to compare the kill time of flurry vs multishot. Multishot has half the single target DPS of flurry (allegedly). Yet, once this bug kicks in, it becomes the case that multishot has a faster time to kill on a single target than flurry.
It becomes glaringly obvious when fighting a boss you’re familiar with. You can feel the lack of DPS and, if you relog and attempt the boss fight again, you will immediately feel the increase in DPS.
Honestly disappointing that so many bugs like this made it through 5+ years of beta without getting fixed.