@RobertF Group initiative was something we tried, but it completely blew up with my group. Every time their round happend it was "Talk tactics" > act > "Argue"
I have one player with more experience in D&D (everything AD&D and up), one who had played 3.5, but it started with a larger group that never played any edition
We agreed to play every second sunday of the month, but still there are people who plan something else then, so there are more problem than just Combat being slow...
Good tip, I'll try to talk to my players, but they are kind of slow. It took some of them 3 sessions before they brought along a level 8 character when they leveled from 7 to 8 (I'm using group exp, they all have the same XP amount )