[Dragokas]

Did you compare download speed via FastDL and your method (for non-VDS/VPS servers) ?

Hoster differs that things, like he can cut the channel of IP where game server files are stored.
Extension description tells about using RCon port.
What if hoster limits max traffic for that channel.
I won't be surprised if the hoster can even blocks user for misuse of the service.
And, actually RCon generally intended to transfer text data rather than binary, so it is by design should be low level performance channel. So, very interesting to see test results for VDS and non-VDS hosted servers.