Free VPNs usually don't offer the speed and data limit that the premium ones offer. Have you tried torrenting a premium VPN service software yet?

you can download zenmate for browser if you want, because zenmate can help you to visit more site without worried to get banned when you online. zenmate have 2 option which is for free user and paid user, and i am sure it is worth it for you to choose.

beside zenmate, you can visit cyberghost for another option, but i don't know if cyberghost is available for browser or not but cyberghost have many country and many ip that you can use while you are using free user.

First of all never use a free vpn because they sell your data to spy agencies. Now for GTA 5 in china you should use vypr vpn or express vpn. you can also find more vpns for gaming here: http://vpngrades.com/5-best-vpns-gaming/