Whatever you know best. My personal choice of distro is Gentoo, my gaming pc and my carry laptop both run it. My games run great in gentoo, and because I understand it best, I deal with few issues. For a long time it was Arch, and before that Ubuntu. I used Ubuntu for only maybe 2 months before moving onto Arch then Gentoo. My games always worked, but once I really understood Linux, they ran great.
Whatever you know best. My personal choice of distro is Gentoo, my gaming pc and my carry laptop both run it. My games run great in gentoo, and because I understand it best, I deal with few issues. For a long time it was Arch, and before that Ubuntu. I used Ubuntu for only maybe 2 months before moving onto Arch then Gentoo. My games always worked, but once I really understood Linux, they ran great.