mathematically speakly, 10 frame per second basically is 10 x 1/10s. this is only in term of shutter speed, process speed of the cpu, buffer of camera and writing speed of memory card also plays a part. so even at 1/4000s it still wont cross the fps limit set by the manufacturer.
if you set at 1/30s, 3 frames already need close to 1sec, so at best you would only get 4fps, again not taking into consideration of buffer and card speed.