I ride a carbon credit.
When I go at high speeds my board chatters a lot and it makes me scared I'm going to catch an edge and wipe out.
Do you think the problem is the board? or just my fear of going fast?
The good news is that the chattering wont make you catch an edge per say (thats down to you ).
Focusing on where you have the pressure on the board can make a difference - if your weight is back it will help he nose chatter. So focus on seeing if you can quiet the board while you ride - it will make you a better rider.
But ultimately some boards are just going to do this. You'll get used to it probably.