It's not about the performance buddy, it's about the security. They're enforcing people to install a rootkit on their device just to play a game "for fun". Insane mindset by Tencent (chinese companies mindset for sure).I don't think the VG will reduce the size of lol player base, at least not signiffically, i believe many players are not very familiar with tech and they will not even realize the install VG. The perfomance impact will not be that heavy, lol can be played even by low end laptops from 10+ years.
The new anti cheat is not yet active on lol, it'll be in about a month or so