I keep having the same issue where, when in battle and trying to open the crowns shop in order to purchase a henchman. However, it takes so long for the crowns shop to even open the page that by the time any of the items show up, the battle system has already skipped my turn.
This leads to the player not being able to pick a spell or get a henchman purchased, resulting in a less than fun time. Otherwise my game usually doesn't experience any sort of lag or delay.
There is a good chance this is a MacOS only issue? Im not sure if others are experiencing this issue as well.