1100Dx4 Dude Edition SSTP Slow

Hi,

I bought that router for CPU for VPN and SSD…
I read on mikrotik site in the router’s specifications that it has very good VPN performance

I make just 1 tunnel with SSTP protocol from LAN to router for testing.
I try speed test on external site and with SSTP maximum speed is ~45 mbps. In router CPU use 1 CORE (100%)

I make another connection with L2TP and speed test was 90 mbps Download and 140 mbps Upload and use ALL core

Why is that big difference from router specifications ?
Where am I wrong ?

Best Regards,

Did you run Speedtest on the same device?
If yes the Speedtest eats your CPU not the Tunnel

Just a simple speed test site
From my PC to http://www.speedtest.net/
One test with SSTP and one test with L2TP