There definitely needs to be separate dedicated servers for the HL and 6s Queue soon -- 1 server for both at queues at least.
I think with the ramp up and promotion of RGL PUGs into beta, a rush of players have flooded in, especially for HL again. This had lead to HL PUGs taking over the 1 dedicated server at times where 6s players want to queue up.
There was enough for the 6s captain queue today -- after waiting half and hour for the HL open pug to end -- and it look like it was about to happen until the HL Open PUG took the server instantly. This basically killed the 6s captain queue and much them moved to an in-house pug server. Nothing wrong with that, but if there's a need for testing, wouldn't you want to get feedback on both formats?
Obviously, there's been a search to find a decent server provider that works for the website, so I can't fault you guys testing with 1 server most of the time. Hope we can get more servers soon....