periodic temporary freezes

[Duelin]

I've been playing here for about a week and having a grand old nostalgic time, my problem arises because seemingly at random, my game will freeze, just for a second or two, and then go back to normal.

It doesn't sound like a big deal, but when I'm trying to run back to the guards to not die and I get a random freeze, my character will just full stop for the duration of the freeze, usually I die. If I get a freeze on one of the Kelethin lifts, when the game wakes up again I fall through and die.

I'm running the game in windowed mode, first with EQEmu, having tried with the "use one CPU" option clicked and not, now I'm running with WinEQ2 and I still get the same problem.

I'm running Windows 7 64 bit with an Intel Core i5-2500k quad core CPU and GeForce GTX 550 Ti graphics chip with 16 gigs of RAM.

Any help would be much appreciated.