^ I don't think op is referring to STM but to application throttling.
VPN traffic will probably be classified as 'unknown' and so throttled as such...whatever that is.
This link below covers various operating system setups:
https://www.relakks.com/connect.php
Where the guide specifies pptp.relakks.com change that to the address of your vpn provider.
Worthwhile VPN's cost around £5-10 per month but I doubt there are many that will give you speeds comparable to even a throttled direct VM connection on anything above 10meg.