@Roadtrip635 did have me considering something though. Dak Prescott's performance was very wooden in nature. Acting is never as easy as it might seem.
Being asked to do everything he did, with a possibly minimal film/CGI crew and inside a less-than-standard Hollywood sound stage, would likely be difficult in injecting much energy into the task. I am certain he got direction. And whatever stage he was one had artificial placeholders for the missing elements (e.g. Tom Hardy, the symbiote, scenery, etc.) of the shoot
However, many professional actors have commented how difficult it is relating to people and stuff not in the immediate scene with them. It is much harder reacting to someone or something that is not there. Those folks do it regularly for a living. Prescott would be at a disadvantage of adding *more depth* into what he was doing if his environment was foreign to him.