I recently poked around online to see if my rtx5070ti would be supported and found a bunch of people facing issues, and that Mint and Ubuntu weren’t recommended.

No idea what you could have been reading, but by and large, there’s very little difference between distros when it comes to GPU drivers.

However, if you want the smoothest experience, then just use a distro that comes with drivers that install with the OS. Best one I can recommend is Bazzite. You won’t have to mess around with GPU drivers at all and it doesn’t matter which Nvidia card you have, they all use the exact same drivers.