After a long think Stockfish.js 8 from my analysis board on chess.com decides that black has a slight advantage after the move h4. But when i play Ng4 instead the engine all of a sudden thinks black is winning!
How is this possible? I always thought that the analysis board is there for going over my games, do i have to reconsider?
Or... Let the computer run longer than 10 seconds.
I did that and as you can see stockfish is still blind to Ng4 at depth 33.
I'm confused, how can this be?
So i guess the power of my macbook is not enough 
1,6 GHz Intel Core i5 isn't doing the job.
It took a couple minutes, but it got there. This is a several year old version of Stockfish, as well.
So i downloaded the stockfish app and it took about 2 minutes to find Ng4 (depth 35), must be the pruning like blueemu said.
Thx for the answers
After a long think Stockfish.js 8 from my analysis board on chess.com decides that black has a slight advantage after the move h4. But when i play Ng4 instead the engine all of a sudden thinks black is winning!
How is this possible? I always thought that the analysis board is there for going over my games, do i have to reconsider?