Sabai Technology offers preconfigured mini PCs (VPN Accelerator). Not inexpensive but if you don't want to be bothered setting up a system on your own it is a possibility. You probably can expect to get up-to 95% of your line speed using a VPN appliance. Never tested my VPN appliance with a full gig connection but I have no problems getting close to 700 Mbps on a VPN client on my network.
thanks that does sound ideal, trying to get my head around this Sabia VPN accelerator Z device, so its basically a mini pc with Sabia OS similar to merlin or tomato, with policy routing, kill switch, openVPN support?
I see the VPN accelerator has only 2 ethernet ports, one for the router/modem isp connection I guess and the other for openvpn, could a switch be used to hook up other devices, Pc, consoles, tv?
Glad you are getting 700Mbps at least, at least its possible to have good speeds given the issues with VPN providers, OpenVPN, WG, singe core openvpn etc