Lost ISP Internet speed with netgate device

[Patian]

Hi all,
I am new to the netgate device and pfsense. I am still on setting it up and testing it.

I notice that I am not getting the full ISP speed from the netgate device. I would like to know the reason for it.
I have a 1G Bell fibre service with a promise of max speed of 940M download and 750M upload.

I had an identical testing condition to compare the result. The only difference was swapping between a Bell modem and a netgate SG5100.

The testing was done at the Bell modem LAN port and Netgate LAN igb1 port, with speedtest with ookla, same speedtest server, same cable,laptop and browser.

The result with Bell modem as follow:
Ping UP Down
1ms 932 692
1ms 933 624
1ms 937 662

Result with Netgate
1ms 797 593
1ms 810 611
1ms 789 604

It is PPPoE connection with WAN VLAN.

Did I config something not quite correctly on netgate?

Best Regards