We see the stability improved since the changes made on Friday, we're monitoring the situation

Today, we implemented several improvements to our Previews to improve the stability.

We continue to monitor the situation.

We are working with the preview sandbox provider on improving the situation, sorry for the inconvenience!

We are investigating elevated issues with the previews (right side of macaly) where it takes several minutes to load or time out with a server error for some of our users.
This doesn't affect published websites, but can be frustrating when doing changes.