I've reached the stage with this now where I record the programme (well, I always did that, I never watch a programme 'live') then I play it back with subtitles, fast forward slowly so I can follow the programme at a much faster pace.
Doesn't really make it any more engrossing to watch. But I'll keep with it just cos I'm curious how they're going to end it. And how long before they realise he's faking his memory loss.