Hey,
tested that. Sending now for the RGB Mode (COmmandID 2) following Code: *\n2\n255\n0\n0\n => Now should every parseInt() (CommandID, Red, Green, Blue) end directly after the int. But it doesnt. Timeout is still there.
Tested the Timeout thing. It works faster if btSerial Timeout is low (resetted it). So btSerial is the Problem.