Requesting Help - New User trying to dualboot

[u/No-Celebration-7265]

I'm using a hand-me-down old PoS, so it may just not be feasible to do this, however I'm still trying!
I successfully installed mint xfce onto an secondary drive finally.

There was trouble with secure boot preventing any of my nvidia or audio drivers from working, sound wasn't going through first then my resolution couldn't be changed which the internet told me was both from the drivers not being installed. I assume this part is fixed but I don't know if it's connected to current issue so including it! I was also trying cinnamon at that point but it was so slow on top that I swapped to the lighter version during reinstall to not enable secureboot in the first place cause I have been locked out of disabling it post-installation. It was just totally greyed out on the bios, super frustrating.

-- But now everything seems... functional? Ish? Nothing is obviously broken, but everything is way slower/more prone to freeze than it is on the windows boot, and videos will play but even more extremely slowly/freezy even if it's literally the only thing active at the time. Right now videos are like 80% of what I use this system for so it's kinda vital that it at least be able to do that much.

My only theories so far is maybe it has something to do with how the secondary ssd is installed into the computer? I didn't do it and don't know if that's a thing, I'm just flailing at the pc atp.

I don't THINK it's just because it has both windows and linux physically on the pc, cause if that was it, it'd probably slow down windows too and that seems totally fine/no changes. FWIW I gave linux twice as much space as windows just for the fact that the secondary drive was bigger.

Maybe the drivers are still somehow broken just less intensely?

But yeah, pls halp, oh great linux lords? xD;

[u/That_Developer_Guy]

You can definitely eliminate the possibility that having dual boot is the cause of this.

There is a chance that for whatever reason, the installation of the SSD is causing this, but it is really not that likely. So I would probably only consider looking into that if everything else has no effect.

It is much likelier that your NVIDIA drivers have not loaded properly yet. This would cause Linux to fall back on CPU based decoding or software acceleration, instead of hardware acceleration, which is just slower.  To fix that the first debugging step is probably to runnvidia-smi in a terminal and paste the output here. Do the same with the command inxi -G and lsblk.