Kamvas 16 pen freezing and lagging

Hello!

I got my kamvas 16 tablet about 3 days ago and been having problems on and off. I managed to fix most of them by resets, managing the cables and reinstalling the driver but there is a continous problem of my pen freezing frequently. I've tried replacing the pen nib and I'm fairly certain I've installed the driver correctly. The pen freezes on every program and in all uses except for in the device diagnosis environment, where the cursor of the brush just lags behind the pen tip instead of freezes. 

I looked at similar issues and didn't find any applicable solutions. Is it possible my pen came damaged? 

I would reallly appreciate your help. Thank you in advance.