No such thing as a rounder at 2nl, lol. TBH, the vast majority of players at 2NL are terrible poker players. Some might be "better" than others, but still, on the grand scale, they are bad poker players.
Stars has the best game selection you can ask for in these days, so if you can't find a game there, you won't find one anywhere.
If someone open limps, bad player. Overplay low pairs to river, bad player. Doesn't have 100BBs in stack, fish. Very easy things to look for that you will see in the first couple hands, if not before you even sit down.