The way you use UnetBottin or Lili make them works or not. Depend of the configuration you made (and then depend of your mode of boot: MBR or GPT/UEFI).
Also, Antergos (so... ARch in the back) is a good distribution as well as Manjaro or Apricity (arch to). KDE5 (plasma) is still very new due to the "new" qt5 GUI... that is why it still buggy. If you want a stable and funny desktop, don't use them, there is many other who do the same that KDE does.
I'm actually try to show people on youtube a list of Linux distribution for beginners, but actually still in French langage.
I see that Solus is one of the top 5 beginners distribution... an other should be Mint Linux (debian style), and Manjaro or Antergos to.
You can do use Linux on top side, then configure a virtual machine for run windows... but you also need to go passthrough your Nvidia card. (blacklist this GPU then... you will use only for windows this way)
Actually, if you want also to make force to run some screwed (by commercial fu... desision) part of your GPU, you can also do it well from Qemu (but... if you can not config your OS? i think you will not able to make it running, it is not beginners-friendly).
Or you can do use steam for your games (i never play games... but i read many does with that).
For your driver, you first have to well look at the driver name to install (and be sure to install it without other one who can override it).
Then you can use blumblebee for switch between Intel included GPU and Nvidia GPU. Also, use of Nouveau should improve performance and maybe loose some other thinks... need to try to see.
Go to search for help on IRC freenode server on #archlinux channel where you can find the top level admins on linux arch distro like (don't tell them you are under Antergos... they will cry...).
There is no real difference "perf" between distros (not to much or maybe... best answer should be: perf about what ?).
depend on what you are searching perf about. If you are serching perf for do games, best and easy way would be to buy a console game (from far).