If you had the catch in RSC it wasn't anything to do with ping as commonly thought. Each time you signed in you were assigned a UID, if your UID was lower than the other players you would have the catch. Without a modified client there was no way (to my knowledge) of actually knowing your UID though so often players would just relog until they got the catch on a "friend" before going pking.
Crazy you bring this up, because us americas other than fucking cash for some unknown reason have a 2 second click delay. Which for you might be kinda confusing. Let me explain this. When I click, it takes 2 seconds for it to do anything. 2 seconds is a long ass time. It has been this way for almost a year now. It literally makes me only log in when I'm taking a shit. There are alot of other people having this issue but it is dismissed by your mod team because cash is the only one who lives in America and walks into the wild it seems like and for some dumb ass reason ppl are listening to cash...
The end. Unban my discord.