the day before yesterday, I installed QVPN on my QNAP 253a. There, I used a OpenVPN file form AirVPN.
Without VPN, I get spends of about 35 MB/s. With VPN, I get a maximum of 2 MB/s.
The CPU should be fast enough for it and while connected with OpenVPN I do not get high CPU usage.
I tired it with UPC and TCP but it won't get faster.
Do you have any idea what could fix it?
Thanks for your help!