Here is my hardware setup: I have tried all combinations and always had the mentioned problem (random dropouts about 5 to 10s), sometimes after several hours of playing) from midi out via USB, piano responds from a second keyboard, no interruptions on the software side).
IPAD PRO 2021 M1, IPAD PRO 2022 M2, connected via usb c
2 different USB cables (no specific brand) connected to
2 USB hubs, Anker Premium 7 in 1, 3XI USB C Hub 9in1 Type C
I can't make out which wireless connection you are referring to, as it seems the piano only works with WU BT 10, which is not suitable for live playing due to high latency (midi and audio).
I could do a test with a PC, but it wouldn't really help as this option is out of the question.