I don't see the problem, I could understand if they were under CP160 but there is nothing wrong with someone being CP300+ Imperial city prison is not even one of the harder DLC dungeons, give them a chance.
Seen plenty of high CP players who performed much worse than lower level players over the years, trying to judge someone on there level alone won't tell you much.
See how the group performs at the first few bosses before even thinking about abandoning a group.
I used the Activity Finder to que for veteran dungeons. I am dd magsorc cp 1800. My 3 group members are in their cp300s+. We got icp dungeon. What other options I have beside leaving. Thanks in advance.
Agree. You never know, don't make the assumption that lower cp means they're not good at their roles. I've already seen 300cp players with better parses than 1000cp players.Give them the opportunity to prove themselves.