I see what you mean. Maybe he was recording and uploading the voices to process and utilize in a future hunt, who knows?
I agree with you on the Predator vision in the first film, while it may be a classic, the effects really improve in later films. "Predators" shows just how detailed their vision really is, even Berserker's unmasked vision can see in far greater detail than the first Predator could. I think that in-universe, Anytime's vision would've been pretty "detailed" (still tricky for the human eye to follow) but the effects couldn't show it that well at that time.