[AfterShock]

He just means offsetting the grenade beeps by an average (ping*2) latency. Something like cl_grenadetimerlag 100 for 100ms delay.

To clarify, TFC starts the clientside beeps when it receives a message from server saying "you successfully primed a grenade". If the ping time is 50ms, the timer starts ~100ms(+ticktime/2) after you pressed the key.

The problem here is that the higher your ping, the earlier you have to jump in relation to the beeps. This is why TFC is so hard to conc when you switch between EU and USA servers, and why FF is superior in that regard. (Although FF still seems to be slightly ping dependent, I think that's because movement is lag compensated and grenade priming isn't)