Going straight in. This is what I've experienced so far -
There's a significant lag for moments right after too many notifications arrive.
Also in my opinion, the previous feature in 3.0 releases in which you could put the phone in vibration right from any screen without going into...
My friends OnePlus 3T has suffered in terms of shutter speed. It's slower now
Some performance improvements could also be done
Facing the same issue
Try resetting the phone
My light sensor stopped working after the update.
Auto brightness feature is a hit or miss in my phone after the update.