Some layers are terrible, some are fine or half-fine, thick barbs hanging off (not stringing), bad inside top layer

The first layer and bed adhesion is fine. Ender 3 V3 KE I've had for like two weeks. All rails and lead screws were lubricated. Overture brand PLA.

The filament has been left exposed for a few days, but it's not at all humid in my house - quite dry, actually - so I wouldn't think moisture is the problem, but please tell me if I'm wrong on that.

I also noticed a very slight layer shift in a smaller part printed in the same job, around the same height where some bad layers occured.