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#11
Agree.
And be aware that "lag", a loose term, can happen for a myriad of reasons, to include the game, system specs, internet connection, drivers (especially video), and even Windows updates (lack thereof), so trying to narrow the causing issue down it basically trial and error.
Anyway you can look through my troubleshooting tips guide to see if there's anything in there that might help.
Tips on Troubleshooting Game Issues
Good Luck.