No worries, happy to help when I can. Now, there’s always a few different ways to test out other window managers or even other distros if you have the time to tinker around. You can either install a specific distro like say PopOS (or EndeavourOS too of course!) and then install your preferred WM on top of that. Or my personal approach I like is to use an application like Boxes (similar to VirtualBox), which are both Virtual Managers that you can run within your desktop to test other desktops without actually installing it onto your actual system since it works all within the Boxes/VirtualBox software. These are just Virtual Machines, so while it’s nice to test things out within them, they do take a little bit of a performance hit since it’s kind of like emulating a system within a system (kind of like the movie Inception).
Quick side note, there is the EndeavourOS wiki that was created to help most users get setup with various options: https://discovery.endeavouros.com
There is also a section in that EndeavourOS wiki specifically for nvidia here: https://discovery.endeavouros.com/category/nvidia/
There’s a couple options to choose there, you don’t have to use all of them, just the one or two wikis there should get you the option you want. That’s how I got all mine setup with the help of wiki pages.
Since I know you like a WM type of environment, there’s actually a user here that created a new WM called worm that they are actively developing and adding new features too. Some features are not fully implemented yet, but for the most part it’s in working order, so if you’re curious you can take a look here and read up on it:
As a final side note, and something to consider as like a last resort if you will, Pop!_OS is a Linux distro, based off Ubuntu, but what I want to say is they have one of the best out of box experiences with nvidia. So if there’s a chance your issue doesn’t get resolved, before going back to say Windows, I’d recommend trying Pop!_OS at some point. The other reason I mention PopOS is because while they use the Gnome DE, they also created something called pop-shell, which acts as a tiling manager in Gnome. A lot of people like it and find it very useful. Just something to keep in the back of your mind or if you want you can also test out PopOS if you have the time too.