I think this may be a dumb question but i'll ask it anyway. When do DMs start, it says 20 minutes, should i assume they start at the top of the hour, for instance 1pm 1:20pm and 1:40pm. The reason i ask is because it's rare that i get involved in a DM that isn't already started and people have 70-100 pts already.
A deathmatch will start after the previous one ends, as long as there are at least eight people in the room. So the chance at getting into one at the start is not great. If you want to try to find a different match, you can refresh the page and sometimes it will put you into a different one depending on how many are open and the number of people in them.