I really like MSFS 2020.
It: look fantastic, goes well as far as FPS, even on my 5 year old i7 cpu with 1080ti. I set it at high and left it at that.
I believe it will only get better with time and some complex developers add on (A2A and PMDG)
I did struggle with the controller set up (I still think its barking mad)
AND as a proud Kiwi (New Zealand). Who flew into NZMF in real life last year, my advise is Don’t go to Milford Sound in the sim. I flew from NZQN to NZMF (same flight as we did IRL) which is spectacular, its also great in the sim until you enter Milford Sounds. For some reason several mountains are missing including Mitre Peak. But I have to say the rest of NZ looks fantastic.
Good times.