Kreider has always been streaky. It's frustrating because he has the skating, size, and ability to be an impact player, but it only comes in waves.
Mika was generally consistent in years past, but he looks absolutely checked out.
I get Laviolette not wanting to mess with the other lines that have been doing well, but he should be thinking about breaking them to get them going with a playoff spot all but secured. Two of your top 6 players looking this disengaged is a problem.
I said it earlier, but Kreider can be moved around and play to the role. It seems like it's Mika who doesn't have chemistry with anyone else.