Wouldn't server performance testing still require more than the 1-5 ppl that habit PTS normally? How about an organized playtest? Or are these fixes too small to warrant such?
More players do offer a more practical test yes, and we will take all we can get. What we usually get from larger groups is a larger range of behaviors to find any strange edge cases. And we are confident the changes we made will improve performance as these are based upon profiling we do on live servers when the population is at maximum for a continent. Its more of making sure those changes didn't break anything or cause a crash of some sort. Hope that all makes sense.