I just had a thread post like four times because it kept not going through. And this morning I had the same issue where it just wouldn't go to the page I wanted for the longest time.
I didn't had any problems today, but I noticed that sometimes the site loads slowly. I don't think it's a problem with my internet, since it's fast, and I don't use a VPN either. And sometimes, chat messages take a long time to be sent. It must be just some silly errors.
I have had a few more unexplainable problems, including a missing thread and the site duplicating one of my responses (although, before today, I'd seen other responses that appeared to be duplicated), so 
