The thing is, 13 and prop are no different on the field itself. The difference is in the intention and the minutes played. If we say Jake is lock, he is going to play 80, ball play a little and spend most of his energy defending. If we move him to prop, he might play 20 minutes with a stronger focus on ball running before having a stint on the pine.
I'm not even sure what I think, I just know that Jake's lack of speed is an issue. He is still so important and we lose the Cowboys game without his effort to charge down Townsend's field goal. I'm just musing over what could be done to mitigate his lack of dynamism.