tbh I only find it tricky when my ping hits around 300, so that server we played goldrush on wasn’t too bad (although with a few good players on, it might get irritating ;))
I tried pinging this gamespace server 203.34.186.31:27085, and this internode server 150.101.183.75:27015, but both average around 500ms which wouldn’t be playable 🙁
Sometimes late at night on the weekends I’ll find myself on servers from this US site, http://www.teamfortress2fort.com/” onclick=”window.open(this.href);return false; (ips on their frontpage), and I usually ping them around 250. It would be interesting to see what you get to them, as there are usually good games on there.