It wasn't working on the weekend Fraser, I have my geofilter around Australia or it connects me to Indonesia (similar ping) but it was not showing any servers at all, when a friend from the east coast joined me his ping was 100+ instead of the normal 20 so we were connecting to Indo, if I joined him his ping was back to normal.
Hopefully it works this weekend since we get better games on Australian servers.
Neither my wife's or my PS5s were crashing though.