User blog comment:DaNASCAT/Technical Update: August 7, 2012/@comment-732150-20120809145539/@comment-732150-20120809204439

Like I said, I don't think I'll require as many edits displayed at RC any more. The main reason I set it so high was to account for the high amount of edits that showed up in namespaces I don't edit at all, and now that I can remove more than one namespace from RC, that will really cut down the number of edits I see in RC, so I'll need to ask for fewer edits.

Edit: Scratch that. Just checked the Wiki where I hoped this would work, but I still gives me Error 503. The wiki I tested earlier was another wiki I edit regularly, which doesn't require me to filter out namespaces to see what I want. In that wiki, I can only get RC to show with a maximum of 3000 edits, in the one where the filtering would help, the other one, only 500 edits makes it work. I have no idea why the request would time-out in one wiki but not in another, when asked for the same amount of edits. Selecting namespaces so they no longer appear in the RC also makes the request time out. Just great.