Well probably content of cells also affects performance , but when i was benchmarking i was doing so with a dummy cell and i was simply setting the colour of its background . The problem with too many cells seems to be when collectionViewLayout calculates the c o l l e ctionViewLayoutAttributes of the cells and also calculate the end position of a scroll . Probably there are many optimisations that can be done there . <| sep |> Do you write for kayfabenews . com ? <| sep |> But the one host is pouring it into the mouth of a dead one used five bottles and said he found some more . They said that this host went way off script so this wasn ' t in the narrative loop . <| sep |> Holy heck ! I can ' t even begin to respond to that one .