I plan to do a pc upgrade very soon. Alongside that I plan to start with Mint or Fedora. Is there any real or big downsides to dual booting ? Aside from the harddrive space lost ?
If I like or really like my time with Mint I would probably switch permanently but I felt like I wanted to test it for a couple of months before making a complete switch.
Im a big 
so that impacts my consideration. Dont really play much multiplayer shooters so I dont have a problem with kernel anticheat games not working.
I'm currently dualbooting. I'd definitely recommend putting windows and linux on separate drives if possible. The only issue i had was trying to play games that were on an ntfs drive, you'll want to install your games on a drive with a linux file system, there are workarounds but its so much easier just using ext4 or btrfs
Yeah Im buying a new SSD alongside my pc upgrade so Im gonna throw linux on that.