Aiden stops running at the weirdest of times. So far, whilst in the PK ship and night time out in the street (not helpful when you're being chased btw). Feels like he's got no stamina even though he hasn't done anything to drain his stamina or he's wearing concrete boots!
I noticed this change after installing the 'Run Boy Run' map and trying it (and failing miserably because, again, feeling of no stamina or wearing concrete boots!).