Download speed throttling while using Client VPN
I'm having bizarre download throttling issues while using Clinet VPN on my router.
My normal download speed while using no VPN is ~600 Mbps. While using OpenVPN on my desktop (through OpenVPN Connect clinet) my speed slows down to ~300 Mbps, which is normal and to be expected. However, when I use OpenVPN setup with the exact same configuration file on my router, the speed is being throttled all the way to <10 Mbps!
I've tried changing servers, protocols, etc - nothing helps. And here is the most weird part - while debugging I've tied using both my desktop OpenVPN and Client VPN on the router (using the same config) - speed goes back up to ~300 Mbps! This blows my mind away... Could it be that router VPN is disabled when it sees the VPN traffic from a client? Weird.
Anyway, would appreciate any advice on how to fix or debug this.