Some philosophers (of a pan-psychic bent) would say that consciousness doesn't require any intelligence, so even something completely unintelligent (like a pebble, or an individual proton) could be conscious. Others think that consciousness requires some minimal degree of intelligence, a standard which (non-human) animals may or may not meet, but a pebble certainly can't. We don't know who is right here. We don't have any agreed upon objective standards to determine what is conscious and what is not.
But, if it were true that some minimal degree of intelligence is required for consciousness, then it may well be that primitive animals have that degree of intelligence yet GPT-3 lacks it. While GPT-3 can perform at seemingly human level on some tasks, there are other tasks on which even quite primitive animal intelligences vastly outperform it. Maybe, if intelligence is necessary for consciousness, the kind of intelligence underlying the later tasks may be more essential to consciousness than the kind underlying the former.
> If anything it's likely more related to quantum mechanics and waves than it is to "information processing" which is the common misconception even AI experts have.
The idea that consciousness is some kind of special quantum phenomena is highly speculative. Sure, some philosophers and physicists think it may be true, but others think the whole idea is baloney. When you say "likely", that's just your own opinion of what is more likely, there is no hard evidence to support that probability judgement.