I'll start off with an example for context.
Two race car drivers race for the fastest lap time on track X in identical cars. Racer A finishes before Racer B, however it was discovered afterwards that Racer B had a faulty transmission, decreasing his acceleration compared to Racer A. Therefore, it would be reasonable to assume they would have finished at the same time if the transmission from Racer B was functioning properly.
In this case, what non-tangible word would you associate with Racer B? Similar to "cutting him slack", or his "transmission handicap". We would give him __. I was just thinking about this word yesterday, and today it completely slipped my mind. I believe it starts with "com-", but I'm not entirely sure. Help is greatly appreciated!
EDIT: Just remembered: compensation