Hi .I will show you the best ways to reduce lag.I always use these and get below 100 ping.Here they are.
/cl_maxpackets 100
/rate 25000
/snaps 40
/com_maxfps 85
Ctrl+Alt+Delete,Open Task Manager,Go To Processes,End The Bad/Useless Processes.
Scan your computer for viruses,trojans,spyware,bugs,riskware.Fix them immediately after.
Defragment your Hard Drives
Close Background Applications/Processes
Disable Unnecessary Drivers and Windows Services
Lower Resolution
Lower Audio
Download Gamebooster,Tweak Settings,Reduce Ping
Download Device Doctor,Update Your Drivers For FREE
Hope This Helped
I will update it if I find out more