I originally made a post in cRPG technical problems section, but now I've sussed that this problem only occurs with WSE2 enabled I figured I'd move it here, I'll just copy & paste it because I'm lazy:
After coming back to cRPG after a year or so long break I've been experiencing some very strange lag spikes. Every now and then I'll be fighting away minding my own business when suddenly I'll be unable to move for a brief moment, I'll then rocket around uncontrollably, after a moment returning to normal although I usually die because of it. I have WSE2 installed, everything is in order, native works fine and it's certainly nothing to do with my PC hardware as it's more than capable of running Warband.
Edit: Bit more info, sometimes they can be very very brief, where I'll be running, stop for half a second, shoot forward, carry on as normal. The lag spikes are also around 15 seconds between each other on average and my ping stays steady at 40 and doesn't budge, or at least it goes back to 40 so quickly that I can't catch it during a spike. (Although I used to get 15 ping back in the day, not sure why I get more now, could it be related to these problems I'm having?) It also tends to do it a LOT more after bumping into a wall on horseback or dismounting.
Edit:
Lag appears to have gotten worse, would be nice if someone had any idea what could be causing this, it makes footwork impossible.