It can be difficult to get Disney+ to sound great on big blockbuster movies. I give you some pointers for both Audyssey and Yamaha YPAO.
IMAX Enhanced is both a certification program - like THX was in the "good old days" - as well as additional sound processing overlaid over DTS and DTS:X soundtracks. Some of these soundtracks in fact will have a flag that will trip this additional sound processing. Let's see what the issues are then!