User blog comment:DaNASCAT/Technical Update: August 7, 2012/@comment-732150-20120809145539

RC loading has improved, but it's still not as good as it was with 1.16. I can make it load asking for 3000 edits, even though it takes a bit. With 4000 edits, I get the same "Error 503" I got before. That might be just enough now, because of the new namespace filtering system, which I can use to remove namespaces I don't want, which were largely responsible for the high number of edits I asked in RD. Still have to test if that works for me.