BCO is away and actually site errors tend to be my thing these days. Always best to send messages to firstname.lastname@example.org rather than PM us then it will end up in the right place. Anyway, painfully slow surprises me - every test I have shows a dramatic increase in speed over the last 24 hours. Do you have any other symptoms? Is it happening on any particular pages or the whole site?
I have to say that the site is also very slow for me. Plus last night, when on my laptop the site was very jumpy as well as slow. By this I mean that when clicking on to a thread/post it took some time for the page to settle down and become readable. Not a lot of time but certainly very noticable. For instance on clicking the blue 'go to last post' button it would go to the top of the relevant page then jump to last, back to top a couple of times. Today I have found the site to be very slow - on my PC now and actually closed down a couple of processes to see if that was the problem - not really. Still slow.I used Ctrl + F5 also to refresh.this reminds me of another problem I have noticed in the past day - formatting is lost when posting. For instance, I had paragraphs/line breaks in the para above, but it has come out all in one paragraph. This happened last night ehrn posting also. lastly, I had difficulty in posting a book review last night. I posted as normal and all seemed well, until I went back in to book reviews to check it had loaded properly but it seemed not to have i.e. the cover was missing and the PR BREAK had not worked.Going back into the review showed all to be well, and coming out again the post looked fine. In general, a lot of jumpiness about the site. Not very technical, but best i can describe it. Sorry.