This was happening to me a few days ago when I was using the easeout function for zooms and overlays. It would show up as an error because it was apparently typed as “easout”… I thought I wasn’t paying attention and forgot the extra E, but maybe it’s just been the portal this whole time? 
When it comes to everything freezing up, I find that refreshing every couple of minutes helps a little, but it’s super disruptive. Hopefully this is fixed soon, especially with the Magicka deadline right around the corner