How many people does it take to persuade you that the mould is too much? We don't need to see it in game, we can zoom into the picture using paint, at the in-game resolution and see that it is too much.

Here is a mouldy wall. It's subtle colours, where as yours are dark dots scattered everywhere covering all of the wall. At least space it out a bit so it's not all over the place.

Here is a mouldy wall. It's subtle colours, where as yours are dark dots scattered everywhere covering all of the wall. At least space it out a bit so it's not all over the place.