Odd bug on Mestia

[[DVB] TRIggS]

Im not sure what this is; a bug, glitch, hardware problem but here it goes.

First, I get kicked off the server and logged out of BF2 (not CTD just logged out). It says "unable to read server" or something close to that. I also get disconnected from Vent. When I log back in All of my settings are turned on high and at some points makes it very laggy.

This has only happend on Assault on Mestia and only recently (last night and tonight). Luckly I can run that map on high but the following maps like Ejod and Seven Gates, not so well. I checked in Video Settings on my BF2 and they say that they are the same as when I usually play but ingame is high detail. This is not a big problem but I figured it was odd enough and worth posting. Any Ideas on what it is.