It’s been a while since I’ve done long exposure photography and composites, but my recollection is that excessive noise is a symptom of long exposure and high ISO, and stacking multiple shorter exposures into a composite will significantly reduce the noise of the final photo.

Do you know if the L2 and R2 use hall effect as well?

I play a lot of racing games, and I find that that L2 especially wears out prematurely on Xbox controllers.

Oddly I don’t have any problems with stick drift, just the L2 and R2 buttons become erratic.