Heya Hitech, just tried renaming the sounds folder. Granted, its 11 am Monday, so there aren't any major scraps underway, but i just flew through furball island, not 1 single stutter. Normally approaching cons/gvs/smoke or using the hat would do it, and those are normally very easy to replicate, at least for me. I'm using the default sounds, only change at all is using a copy of the wind sound effect as my stall sound.
win xp pro
AMD xp 2400+
Asus A7N8X-X mobo
512mb pc 2700
40gig hdd, recently defragged
256mb geforce fx 5200, 8agp, using omega 53.03 drivers(performance settings)
SB pci 128 soundcard (weak link?)
most recent avail drivers for everything, i think
no AA, no AF, 1024x768 32 bit color,
settings in winders toward performance, all ingame stuff at max perf except gv vis range, which is max. textures per frame is 1, max texture size set at 512 (1024 is default). all stuff in game was at max quality til patch 4, been turning it down bit by bit over the holiday weekend trying to eak a little better performance out.
my average fps run 20s in the smoke, hi 40s- low 60s at alt near just a few planes. vsync on, refresh limited to 60 (old monitor).
hope this helps a little.