PIP, OCD, and Regulation 4 2(A)

I have recently just been awarded 0 points both in the decision and mandatory reconsideration of my PIP case. I am now gearing up to challenge this decision at tribunal. What I want to understand is how regulation 4 2(A) is scored related to the PIP indicators.

Regulation 4 2(A) in the PIP regulations relates to being able to complete tasks repeatedly and within a reasonable time period. For someone with OCD this is the crux of their entire case on the PIP indicators, as for example I can theoretically prepare and cook a meal perfectly well, but the knock on effect of hand washing and showering will mean it will take me like 4 hours to do so. So not only is not within a reasonable time period, it means you cannot do the task repeatedly either.

How is this actually scored on the PIP indicators though? My OCD directly affects my ability on over half of them, but none of the breakdown criteria for points on each indicator are really related to the time it takes you to do a task at all, despite it being in the regulations. So just how do they score you when your entire case is related to this?