Is it possible he is just a "slow blinker" Last year Frost said they kept things very basic and simple on offense. Few options and read for Martinez. He seemed to be much more decisive and dynamic last year. This year Frost said Martinez now has the whole playbook at his disposable, and he looks slow and indecisive. Is it possible he just doesn't have the natural abilities mentally to be able to process all that added information. When he can use his natural athletic abilities and just ball, he seems to perform much better vs when he has to think, process, and make multiple reads.
I even noticed last night when running. Last year he seems to just go. This year is looks like he is processing and looking for that perfect area to run. Which makes him look slow and cumbersome.