I second disabling Nouveau via blacklist, and I’m unsure if there is similar software for Lenovo, but I use asusctl to force the use of the Nvidia card over the integrated Vega graphics. This could very well be an issue with graphics card switching, so it’s worth looking into.
As for distro recs, while most would probably recommended Linux Mint for beginners, I prefer to recommend Bazzite. It’s Fedora-based, but comes with Nvidia drivers and lots of gaming optimization baked-in.
I second disabling Nouveau via blacklist, and I’m unsure if there is similar software for Lenovo, but I use asusctl to force the use of the Nvidia card over the integrated Vega graphics. This could very well be an issue with graphics card switching, so it’s worth looking into.
As for distro recs, while most would probably recommended Linux Mint for beginners, I prefer to recommend Bazzite. It’s Fedora-based, but comes with Nvidia drivers and lots of gaming optimization baked-in.