No, i am on the .34 kernel since it got released. Yes i do update when zorin's update manager says there are updates available.
The only thing i added a week ago was Cinnamon...but i don't see why cinnamon would bug the zorin login screen because cinnamon uses it's own.
When I was using Mint, I made it a habit to switch to Nouveau before taking kernel update then changed back to Nvidia afterwords.
Well i did the same, but i had to reinstall nvidia after kernel upgrade. I use the drivers from the nvidia site.
Ah, right.
You wrote that great tutorial - I now remember.
I think you need to talk with people who also uses this latest driver from Nvidia. As I do not play any games, I never bother to install the latest driver myself.
People who play games,
@Aravisian @337harvey @Storm
might have a better idea.
Since short time i do, they are working great on linux. Thanks anyway for your help.
I might give you a wrong idea.
I never play any game on computer, be it Windows or Mac or Free BSD or Linux or Android. Yes, there are such people exist 
My whole family loved computers, i grew up with games when i was 4. We used to have a Commoder Amiga A500, Nintendo 8-bit, super nintendo, then the computer revolution started with windows 3.1 etc. I played to much, really had no life as kid haha.
Are you still having login loop?
No idea, it comes randomly. I removed the .Xauthority to test.
How much free space is in Root?
I think we found the cause.
It's just a game haha
Disk Usage Analyzer shows Root and Home both in the Red. Am I misinterpreting the image?
My disk is 1000GB, the game that is installed is 70GB. It's the home in red yes inside root. How can it even be red when there is plenty of space ???
This is a good question. I am confused. Those two images seem to contradict eachother.
One looks like there is plenty of free space. The other looks like root and home are very full.
Maybe a bug ?
How large is the Zorin Partition?
SDA1: EFI 537MB
SDA2: Linux Filesystem
This is a strange issue. You have a 1TB hard drive, with only a 70GB game on it, there should be no issue. Zorin OS only requires like what 45GB of space on a drive to function well. Something is a foot.
Hmmm, could you please take a sceenshot of your Gparted and post the the screenshot here so we can see the full results of whats going on.
IDK about Aravisian, but that type of pie shaped analyzer sends my brain into cascade failure, my eyeballs reversed direction, and the amount of floaters increased. Too much eye strain trying to figure that complexity out lol.