I tried it again. Today. Fighting the Slasher of Veils using the Enhanced Client. The good news is that I like the Enhanced Client so much, I cannot switch back to the Classic Client, no matter what. Playing the Classic Client seems like a miniature slide-show in comparison. It explained many times, and I will describe the issue once again: When a creatures casts large fire fields (or in general: when many particle effects, especially lots of field spells, are on the screen), the client experiences increasing lag. The more often it happens, the stronger the lag. After5-7 times experiencing this, the client will use up 100% CPU load and completely freeze or crash. During fighting the Slasher I crashed/had to restart the client about 5 times. I wonder whether the UO developers are aware of this issue and can reproduce this, and whether they are working on a fix. This really is one of the most annoying issues of the Enhanced Client (and issues there are plenty). From what I hear from other players, this happens also on high-end computers with very good 3D graphics cards (using the latest drivers). So it probably is not a hardware issue.