In my group, the combats aren't grindy, in the sense that stuff is generally happening (monster dying, new monster showing up, players going up and down in hp/surges and tactical positioning, terrain doing its stuff etc). But they take a long time. This is partly external stuff due to the circumstances in which we play (eg multiple kids around who need taking care of from time to time) but also in part because some of the players take quite a while to decide what to do on each turn. They haven't internalised their suit of options and how to use them.
One contributor to this seems to be the Character Builder character sheets, which produce (IMO) pretty bad power cards that are hard to read and that hide rather than advertise the relevant info.
One contributor to this seems to be the Character Builder character sheets, which produce (IMO) pretty bad power cards that are hard to read and that hide rather than advertise the relevant info.