Someone Somewhere said:
VPNs don't really have any impact on your ping; if anything they would usually raise it. I really don't know where that whole rumour started...
i tried it. i get 300-500ish ping without VPN. want me to give you a screenshot?
without a vpn:
with a vpn with sucky server:
its just you have to choose the right server in your VPN or probably where is your VPN based. I Dunno. really.