AR-150 OpenVPN

I am using my AR-150 to connect to PIA via OpenVPN using ethernet… My actual internet connection is 1Gbs and I can barely hit 1mb up or down when I go through the AR-150. If I use the actual app for the computer I get upwards of 40Mbs. Is this common? I only really want to hit 5-10Mbs being it is mainly for surfing and purchases.

AR150 can achieve up to 8Mbps. But this really depends on the configurations.

I used Torguard and Astrill and the speed is better.