I use a Godox DP600III studio flash with the Godox XProF trigger.
Everything goes smoothly on the X-T5, but when I want to shoot in Pixel Shift mode there is no way, the flash never fires. I have tried all the low sync speeds, the maximum is 1/25, and all the available intervals between shots. Nothing.
However it does work if I put a Nissin i60 flash directly on the hot shoe.
I have also tried to connect camera and flash directly with a traditional cable and it doesn't work either. It could be that the cable is in bad condition, to hold on to any hope...
However it works perfectly with the High Resolution mode of the Olympus E-M5 mk3.
I don't know if anyone has any ideas on how to get out of this predicament, I spent a lot of money on the camera mainly for this...