The standard worry about DT is that (from the outside) a coherent thread of consciousnes goes though a set of incoherent external world states, which, for, the inside, would look like observing chaos. You have said that what you are worried about is observing chaos, although you have also said that you have a solution to the no-physical-law problem of DT. So who knows?

ETA If you jump, but don't notice you are jumping, what is the problem.

You've also said that what you are worried about is something to do,with measure, although there is an answer to that as well...so....whatever.

That's not even close to what I'm doing.

Which is?

If you were concerned about jumping and jumping was merely 'extremely difficult to observe', that would probably be ok.

However, if you can't observe jumping by definition and are still concerned about it, that's called a 'cognitive defect', and you should fix it. Fix the cognitive defect, that is. The one in your head. The one that's making you be irrationally concerned over a defined unobservable.

No amount of handwaving, being concerned, or liking your current 'subjective reality' is going to make your unobservable observable. Fix the core problem, don't try to paper over it.

But is it rational to entertain theories about differences in external reality that could never make any difference to subjective or objective experience?