Hi. I love my Olympus TG-5, the macro is insane. However, I'm having some trouble shooting fish, as no matter what I do (iso, aperture, etc) the camera always picks too low a shutter speed when using a flash. I understand that the flash has to be able to sync to the shutter speed but I've had shutter speeds varying from 30-100 when using the flash. All to often this value is 30, creating motion blur in my images. This can be fine for slow, macro creatures but is incredibly unreliable for fish.
I'm wondering if there is any hack (to allow me to change shutter speed) or a mode which generally selects higher shutter speeds which still allows me to use underwater white balance as well as shoot in raw.