Slow performance of Prime might be impacting the workflows instance

The last few weeks, we have experienced a lot of issues regarding the speed of the system, as you are probably aware. One of those days, I was demonstrating a workflow to a client, the system was slow and I came accross with a few problems, which I would like to understand if they are related or not with the slow performance.

- After submitting a form the workflow merely failed. Going inside the log, I could see an error which was not like usual and that looked like a normal message we receive in the web when the site is down. Unfortunately i didn't make a screenshot and now I can't find the log. It just happened once and even without changing anything it ran smoothly after restarting.