Using my old laptop resulted in the same lags... I fixed it by upgrading the RAM and getting better anti-virus software.. all of a sudden nothing is laggy anymore.
To have the technology to segregate users and create 'lags' sound a little beyond a volunteer-based website to me.
The Tier One Tactical Operator
Tippmann Arms M4A1
KWA USP .45, KJW P226, KJW hi-cappa