As Nicky kindly mentioned, please could I ask you guys to submit reports of lag to this thread so we can better track it? https://secure.runescape.com/m=forum/forums?409,410,102,66213472,
Lag can be a result of so many different issues, so it's rather difficult to pinpoint without your help. I definitely take on board the feedback that we could do more to make players aware of this route.
By having player reports in a single thread, we're hoping this will provide the Game Engine team with a single source of information to better track and understand the issues.
I apologise for the inconvenience caused, lag is the worst.