Rofl.
My computer:
Intel 925xe
Pentium 4 650 (17x200, 3.4ghz, 2mb L2 cache)
4x512mb RAM (Dual Channel at 266mhz, 4-4-4-12 I don't know Command rate)
X850XT PE (540 / 590 37.8gb/s)
can run the settings at:
TERRAIN_MAX_AUTOGEN_TREES_PER_CELL=1150
TERRAIN_MAX_AUTOGEN_BUILDINGS_PER_CELL=575
AUTOGEN_DENSITY=3
TEXTURE_BANDWIDTH_MULT=96
UPPER_FRAMERATE_LIMIT=18
PoolSize=2575000
FIBER_FRAME_TIME_FRACTION=.28
Very smooth but I still get stutters in cities. Hmmmmm, I know I can get around this, however I am not sure how. Ingame I usually have a minimum of 15mb of VRAM so I cannot boost poolsize up much.
Nick, how high do you think my TEXTURE_BANDWIDTH_MULT=96 should be at?
On that card you are running 256MB. Its a good card, probably the best ATi other than the X1950, but I find the TBM on 256 probably wants to be between 100 and 160. That is not set in stone because its a area that you need to test fly. A sign of a low TBM is city skyscraper textures "popping" in when you change views. That can also be caused by the FFTF being too high and pulling too much CPU time from the rendering engine. A sign it is too high is microstutters or dragging that seems to be worse in turns.
As for city stutters... SP1 is coming however I can make some suggestions to try between now and then.
Since you are on a 256MB card, I think you are going to have to pull back on the Scenery Complexity slider. That is what controls much of the city tower and buildings. If you have it at 100% pull it back to 50% and see if the stutters stop. If they do, raise it to 75% and see if they remain gone.
As I said, I can throw some calculated values out to you, but I do not know how they will work with that older card and P4. Give me a day or so to look it over when I get time. I may need to know a few other things about your system, one of which is if you running 1T command on the memory or 2T. Your BIOS should have that setting available in the manual memory timing unless its some type of OEM motherboard.
Not all memory can run 1T. The system may crash using the 1T command but if you are running 2T, that change to 1T will boost things by as much as 5-10% depending on the system.