In terms of issues, getting certain mounts to persist took some time. I had jump back into Windows and change some settings to get Windows to give up control.
I tried to install a few packages, like Emulation Station, that presented some headaches but I worked through it.
I tried installing SpaceDrive and it was a slog that eventually went nowhere. It’s an alpha but after the effort it took to get it running (and still have it not behave correctly), I gave up.
Installing MakeMKV took a small bit of gymnastics, but it works great. Setting up backups didn’t behave as I expected at first, but I figured it out.
I didn’t really have any issues, per se, with Mint. It was a breeze. I’m sure the forums are great, but GPT hit more than it missed and with a lot less latency that forum posts might have.
Out of interest, any specific issues that stand out in your memory?
Also, you're aware of https://forums.linuxmint.com/, yes?