(Too) "bright" speakers as Dali are not a good match with Devialet, but your description sounds more serious than that. Check the cable connections, try with reset. Try if you have the same problem with just one Devialet configured as Expert 200.
Devialet Expert 440 Pro | Dynaudio Confidence 50 | 2x SVS SB16-Ultra
Anthem MRX 720 | Dynaudio Excite X28 | Dynaudio Emit M20
LG OLED 77 CX | LG OLED 65 C7
Anthem MRX 720 | Dynaudio Excite X28 | Dynaudio Emit M20
LG OLED 77 CX | LG OLED 65 C7