Forgive me for failing to grasp it but how do others in game claim they have no frame rate problems or lag?

I do not have "lag" in the sense of the word it is in First person shooters, and fast paced games, where a player can "Warp", "ghost", "skip", "slow down/speed up".

However it'll be running at 60-80 fps looking at open flat 3d generated countryside, then turn around and look at a town of 30+ vendors with 10-15 players running around in it, and it drops to 20-30. Crank that up to 60 people running around, and it gets much lower framerate.


Hmm, if it is internet related and nothing to do with the computer, then...

Linksys BEFSR41 4 port switch/firewall nat router
firmware 1.43.3 looks to be outdated, so maybe I'll upgrade that.

Marvell Yukon 88E8001/8003/8010 PCI Gigabit Ethernet Controller

So this is all my internet connection then, which is fast, but apparently has some kind of weird latency or horrible problem that creates this framerate?