Is the website under attack? Or is it some other issue, such as instability in the tor network in general?
I have not used this website in a while, but http://dds6qkxpwdeubwucdiaord2xgbbeyds25rbsgr73tbfpqpt4a6vjwsyd.onion/ seems slower than it ever has been. At first, it seems fine. But within a few minutes (right at this second the good performance seems to be lasting longer), I start getting errors about the website being too slow to respond. Refreshing the tor circuit for the site does not always seem to fix the issue. It seems more reliable to restart the tor browser under a new identity and take the few minutes of good performance.
Partially due to this, and also due to the risk of keystroke fingerprinting (which kloak partially mitigates), I am typing out this post in a file before pasting it into the forum. That way, there is less of a chance of me encountering a performance issue while I am trying to make this post.
Edit- Nevermind, I still get issues after a few minutes.