Can't keep up always occurs

Can't keep up! Did the system time change, or is the server overloaded? happens every time you respawn or start a game.

What I expected to happen was...:
Loads normally

What actually happened was...:
Can't keep up! Did the system time change, or is the server overloaded?

Steps to Reproduce:
1. Die or start a game, it blips for the first 2 seconds approx. and reports to log "Can't keep up! Did the system time change, or is the server overloaded?"