The point is to discuss about the lag, not spam the thread telling others that they have to "stop discussing about the lag"
Setting a cap is not the answer though. It would result in a lot of people not being able to spar.
Unless they can test the average ms per user in certain regions, and set a cap to each region based on the average user's ms range. If they could do that, then they would know who is causing more lag to their connection on purpose, and who is naturally lagging according to their region.
Then they could give warnings, "Lower your lag", locked from spar for 5 minutes, 20, 1 hour, 5 hours, etc.