Okay update, I think I mayyyy have fixed it. I read that the Vega 56 is only compatible with UEFI, and I remembered I had enabled the CSM along with disabling secure boot in order to install windows off a USB drive (for whatever reason I had to do this). But after that I never disabled CSM, so I disabled it just now, made sure that everything was full UEFI, and so far it seeeems to have worked somewhat. I'm not having the 1-2 seconds freezes when browsing or going on YouTube, so I'll keep an eye out and update everyone accordingly. Hopefully this works!
Edit: Okay nvm it's still not working