Epic's Tim Sweeney updated the
Unreal Technology page again with this bit on hardware troubleshooting:
More Hardware Troubleshooting
- We received some more confirmations of Unreal working better on TNT's with
the Creative Labs unified drivers using Glide than Direct3D. If you
have a Creative Labs TNT card and have having performance problems, try
that. Especially if you have under 128 megs of RAM.
- Lots of reports of slowdowns from users with Monster Sound's who have
enabled the "Advanced Options / Audio / Use3DHardware". If
you're having this slowdown, disable Use3DHardware and try again. Then
please email utbugs@epicgames.com
and let us know whether that helped. I've seen three confirmations
from users that their problems (huge slow down) went away after disabling
this.
- Jack and I have been tracking down the performance problems with the TNT
on 64-meg (and lower) machines. To our great surprise, it appears that
the TNT is keeping duplicate system memory copies of all our textures--we
saw system memory grow and shrink in almost exact proportion to our
"supposed" video memory texture allocations. Thus the game
uses an extra 12-26 megabytes of system memory--a very inefficient
allocation of resources. This is a big surprise, because the NVidia guys has
always told us this isn't the case.
Problem in my code?
I don't think so, but I'd love to be proven wrong. I'll follow up with
our henchmen at NVidia and Microsoft and see if we can track this down...