I agree with all the above. For what its worth the official Rabbit drivers have options in for this. There is a setting called "Use Move delay only for extendable moves":-
You can see there is also a Stabletime setting which says how long the board has to remain unchanged before the move gets transmitted.
Now I don't think the implementation using the LiveChess software uses the Rabbit driver but maybe there are other options that the team can look into to improve the handling of such things.
At present sliding pieces can sometimes make the move register too soon, and castling can also be problematic if you slide the king.
First is it appropriate to post topics with the DGT board?
With the DGT board playing on chess.com sliding moves must be done extremely fast. Three examples:
Can you think about making the timeout for sliding configurable? That would be great.