I do not have a Draytek router, and would not, but that is for another time.
Like most people, I use the OR modem to connect and the router has no influence on the speed at which it connects.
The only reason I have noticed the speed increase, is that since my Compuserve days, I have always had a download monitor running continuously as I can always see a graph of my downloading.
DrT
Stress - the condition brought about by having to resist the temptation to beat the living daylights out of someone who richly deserves it.