Maximum number of blog posts in Network set to 94! Why so low

This theme is intended to show all activity - or the latest posts across a network, per site.

However, see attached, I've found through testing that the maximum number of possible posts to display is 94 (presumably the buttons showing the number of pages/banners can't cope with higher.

Surely there must be some way to change this otherwise Network is actually limiting the success of a network in terms of only allowing posts to be visible for up to 94 members of a network?