Dear Mr. Efthimios,
I cannot possibly expect you to check this thread after a year but let's give it a shot.
I feel some unease with your approach, however I am not educated in physics, so please be patient.
To make it as clear as possible, as I understand it, your proposed experiment is essentially that of checking something what I would call the 'local computational capacity' of the universe, that would more precisely be 'time scale resolution computational capacity', as the proposed experiment concerns accelerated computation in a local preocupied space. Is that correct?
I have some doubts about the realizability of this experiment, or, its interpretational value. You predict the appearance of a noise of some kind in the output, if your hypothesis is correct. However, you do not propose any of its particular properties. When eventually found, it would feel temptating to ascribe it to the features of the suggested virtual functional reality.
But what would really be its nature? Probably it would be something of a stochastic process. Could it not be in the same manner related to the anyway profound question of nature of chance?
Relatedly, I have a problem with your use of the term 'true description of reality'. I do not believe any such property can be ascribed to any scientific theory. Anyway, they are just the models of the universe, which itself is as it is (in the spirit of scientific realism). In this sense, all of physical theories are just tools for making more or less accurate predictions of matters, of course. None can be favoured because of its metaphysical foundations.
I have no problem with the possibility of existence of fundamental limitations on the local (space- or time-bound) computational power of universe. However, your proposed idea indeed seems to me metaphysical in essence. I fail to see the signs of its testability.
Kind regards,
Michal Krajnansky