Bell gigabit plan here too. With direct connection using the bell sfp to the USG-PRO, could only manage 600 down, 600 up. With the HH3000 in bridge mode and using a cat6 0.5m cable, down is 950 up is 750.
That's upsetting, though on the USG-Pro could it be PPPoE overhead causing the slowdown rather than SFP?
I'm 90% certain this same issue was affecting the USG-XG-8 as well but sold it off before the UDMP SFP+ bug became an issue people talked about.