Unreal 2 was a pretty demanding game but still, it should have run better on the P3 indeed. Your dogslow framerate is brought to you by VIA Technologies 😁.
They are quite bad, unless you install the correct Service Packs and generally play around. Even if you do find the optimal settings, they're still slower than Intel's chipsets.

[Thread moved to Marvin Section]

i guess the largest defect of via chipsets is poor memory performance, just compare your superpi times to those on 440bx/815 mainboards(which has nothing to do with agp performance of course).

Both the P3 and the Radeon 9200 would bottleneck Unreal 2 pretty significantly. As a minimum you really want an Athlon XP or Northwood P4 and a Radeon 9700 or Geforce 5900.

I originally played Unreal 2 on a similar machine. It was a Duron 1000 with a Radeon 8500 on a KT266A motherboard. Most strange was the robot world section which exposed some major problem with KT266A and Radeon 8500 - framerate was literally about 0.5 fps and the sound was stuttering too. Some KT266A/333 boards received BIOS updates that specifically tried to address 8500 problems.