Check to be sure no irqs are shared, page file to 2048 (constant size)
Disabled Fast Writes, 1.6 agp voltage, 256 aperture size, PCI latency 64.
DirectX 9.0c + XP Sp2
Asus 1.006 bios Final
Check Video card clocks (both set to 350), No bios update for GT yet.
Upgraded drivers (tried 66 beta, & 65.73)
Latest Via 4in1 driver 4.53
removed audigy 2 zs
new 550watt Antec True control power supply
Still having pauses in Railroad Tycoon 3 (1.04 final). Determined by removing audigy card, that repeating sound during studdering/pauses is side affect of original problem, not the problem itself. (removing all sound hardware did not fix the studdering/pauses)
Possible causes remaining:
Via chip conflict with Nvidia Card (going to put in my intel system later to try)
Keyboard/mouse polling problem - (problem is only evident during games where keyboard and mouse are used, not during non-interactive high intensity graphic programs [pirate ship demo, mermaid demo, dxdiag test square] ) - will try usb instead of ps2.
NVIDIA Driver &/or bios problem (unlikely, problems with all tested drivers so far)
Conflict between games and nvidia system tray programs (unlikely)
Graphics settings configuration problem. (AA, T&L etc)
Software needs now patch to fix problem.
Reposting system specs:
AMDFX53 2.4 Ghz
Asus a8v delux Via k8t800
1024 MB DDR 400 2-3-3-7 timings
EVGA GF6800 GT
550Watt Antec True Control Power
2x WD Raptors 74.0 GB Raid 0
SB Audigy 2ZS
Plextor PX712A DRD-RW