Interesting, how many columns you have in that deck? Each column has Setting you can adjust auto refresh interval and create one Deck dedicated to Waves only.
One of the items we have in our todo list, to create separate dedicated page for Waves, right now they are part of Decks, but once they have dedicated page, things could run much faster and give better user experience.
It looks like that - two working collums and one that hardly ever loads:
Try changing Waves type to specific host, right now you selected All filter which means it is trying to fetch all short content from ecency waves, leo threads, liketu moments, dbuzz feeds and trying to re-arrange items in chronological order, that's slowing it down. Instead delete last column and add new column, select Waves and change All to specific host ecency.waves for example, that will make it load much faster.
Oh, thanks, gonna give it a shot!