I think the agent only uses bandwidth when actively uploading results and downloading a new workunit, which shouldn't be happening all that often unless you have a really powerful system, once or twice a day on average maybe? When that happens, I guess it would be like any other app trying to use the network and use as much bandwidth as it can get.

if you are having lots of patches of lag, say several per hour, then first thing to try would be to exit the agent (find the icon on the task bar, right click and select exit) and then see if the patches of lag go away. If they do, then maybe it's a memory usage problem, and if they don't then maybe its a problem unrelated to the grid agent. If it is a conflict with the grid agent, then maybe you'll just need to exit the agent when you're warcrafting. Depending on how into that you are, that may not leave any time for crunching workunits for the grid

Yes, I'm an old WCIII FT addict myself. I know EXACTLY what you are talking about with the lagging. What a pain in the...

Playing at level 20 on a 4 person team it is rather difficult when you have a teammate lag out. Especially when the opposing team is using the maphack. I had to create my own semi-hack on that game just to keep up with all the maphackers. I haven't played in over a year and now I'm feeling the call of the addiction. happy thoughts happy thoughts..moving right along

You don't have to uninstall the grid agent, just exit out of it before you start your game. I hate laggers on WC so do us all a favor and get a better connection damnit! :-)
At least make sure that before you run the game that you go to task manager and close out everything but the essentials.
Exit out of the grid properly before killing any tasks.

If you are playing on your own home LAN, you shouldn't notice any difference. However, if you are playing on the Internet, you may notice a little lag when it uploads a result or downloads a workunit or update.

I'd really be surprised if the Agent was causing this lag. If you're playing a CPU intensive game (as most are), Rosetta is doing very little work and I'd really be surprised to see it actually finish the workunit while you were playing. Unless you were almost done with the workunit, any CPU intesive game is not going to give Rosetta enough time to do much of anything.

However, Rosetta does use a lot of RAM and maybe your are occasionally swapping which would cause a slowdown in the game (not LAN lag, just occasional sluggishness as the OS swaps pages in/out of swap).

Instead of uninstalling the agent, why don't you simply exit the Agent prior to starting the game and start it back up when you are done? This is what I do.

"a slowdown in the game" = a lag in the game

A lag in your game = Lag to all those networked in your game.

Although not due to bandwidth deficiency it is still a lag none the less.