I can’t tell you if Void or any other minimal distro is significantly faster relatively to something more comfortable than Fedora.
But even if it is, then I would still use something “bloated” because it just works and requires less input from my side.
Booting takes just seconds anyway with NVMe disks, so why bother if it takes 4 or 5 seconds, if the PC runs smoother for the next days it is powered on?
Use whatever distro you like more, and install your packages with Distrobox. Here’s a post I made a while ago about it: https://feddit.de/post/8018330
I personally enjoy Fedora Atomic even more than the mutable version, but in your case, you would have to decide for yourself.
It’s basically Nobara, but properly done. (If you choose the desktop version)
It gets updates automatically (max one day after upstream Fedora), has everything you want ootb in the first start wizard, is more secure, and much more.
I was very sceptical at first, but after trying it out, I really noticed some minor performance improvements in games and many QoL improvements, e.g. the preinstalled LACT, which allows me to set up fan curves and over-/ underclock my GPU.
Setting up my new PC took me about half an hour maximum.
9/10, I highly recommend it to anyone who wants a smooth gaming experience.