How to set up VPN behind NAT?

Question

VPN

There is a GW-1 router that distributes the Internet (192.168.0.1) and whose settings there is no access
There is a GW-2 router that takes the Internet from GW-1 (192.168.0.2) and distributes it to the network (
192.168. had fast access to the 192.168.1.0/24 network from home.
I am considering two options:
1 - ask to forward ports for OpenVPN to GW-1
2 - buy a VPS and install an openvpn server on it to which both clients and GW-2 and employees from home will connect. But here the question is how to make the traffic between the GW-2 and the employee go directly and not through the VPS?
What kind of speed loss should be expected in the case of OpenVPN and are there any faster solutions?
Thanks

Answer 1

IMHO, the 2nd option is more correct and in the vpn server settings it is possible to specify how to route client traffic