I used to watch every episode of EE, but stopped completely a few years ago.It wasn’t really Olly Alexander’s acting in the Eastenders cameo that was dreadful it was the cringe of the whole scene with other characters making bad puns:
“We go way back, years & years in fact”
“I think it’s a sin that he doesn’t like girls”
I always found those 'filmed in a rush' scenes (where they tried to shoehorn in a discussion about last night's England game, etc) forced and awkward. I'm getting second hand embarrassment just from reading your post