This is a nice machine. However, it is also a very new machine with a very new Nvidia card.
Zorin OS is stable and Long Term Supported. The current version is based on Ubuntu 20.04.
Zorin OS 17 is due for release before too long; but has not been released yet. In which case (sad to say) if you are having difficulties with Zorin OS 16, it may be due to the hardware you are using being a bit too new.
Which is not something that I say very often.
It's just a matter of timing, where a new bit of hardware arrives shortly before the next version of Zorin OS arrives.
My own way around this is by setting a custom DPI which works far better than "scaling" which I cover the issues with here "The reason fractional scaling is tricky"