It is slow in manual mode when using "clarity" (it's ok) and randomly in AUTO mode (in AUTO the clarity option is grey, can't be change, no flash using) . Sometimes from the first shot, simetimes every few shots, sometimes several shots in a row. The screen is black and the message "storing" is displayed. This takes about 2 seconds. The light is then red. The card used is SAMSUNG Pro Plus SDXC 256GB (UHS-I / U3, V30).
Is it always slow? Is it only slow in Auto mode? Are there specific situations when it is slow?
What do you mean by "camera is terribly slow"? DO you mean when writing to the card? Does the light flash when it is slow?
What card do you have?