Weird Problem - FPS crash when moving the screen

[REVENGE]

I have a Geforce 7800GT with latest WHQL NVIDIA drivers for Vista 32, and for some reason whenever I start to move the screen around the map, my FPS drops down to ~2. Everything renders fine when the screen is stationary, at any zoom level. I've tried everything from all settings on high to all settings on low / off, and this problem keeps occuring. When I view diagnostics, it seems the Shadow/Reflection drawer is absorbing huge quantities of CPU time when I move around for some reason. The spikes are clearly visible in the graphs, going upwards of 200% usage. Does anyone know why this happens, or how I can fix it?

EDIT: To clarify, I have dual core. All settings related to NVIDIA's Multi-core modes / core affinity have been tried, and none resolve this problem. On a sidenote, if you turn the multi-core setting to "Auto" in the latest NVIDIA driver, not only does Spring run correctly, but you get a slight boost in fps. From my experience anyways...

[rcdraco]

Vista 32

has sucky openGL support, ok, thanks. My friend MrStone can't even get spring to start up on his 8600gt, be happy yours works at all.

[Rubenes]

Vista 32

has sucky openGL support, ok, thanks. My friend MrStone can't even get spring to start up on his 8600gt, be happy yours works at all.

This cryptic rant contains the following message: "The Nvidia drivers for Vista does not support OpenGL properly. You can fix this by either hoping new graphics drivers come out for your Nvidia card which support OpenGL, or changing your card for an ATI one."

[Peet]

or changing your card for an ATI one."

Remind me not to drink root beer while reading H&B posts...there is root beer on my tie now


Oh, and the problem could be GPU or possibly chipset drivers. Spring sends the map textures from ram to the video card every time you move the camera; bad chipset drivers could possibly bottleneck the FSB or pci-e buses.

[REVENGE]

or changing your card for an ATI one."

Remind me not to drink root beer while reading H&B posts...there is root beer on my tie now


Oh, and the problem could be GPU or possibly chipset drivers. Spring sends the map textures from ram to the video card every time you move the camera; bad chipset drivers could possibly bottleneck the FSB or pci-e buses.

Interesting. I will have to test out different scenarios, ranging from scaling back my overclocking changes to reverting to older drivers [which worked fine]. However, this new driver does provide a nice speedup to basically every other rendering scenario I've encountered...so...

Yeah ok Vista sucks go fuck yourself.

[jK]

Info:
Groundtexture uploading has changed in the svn, in 76b1 it was done by the cpu (the cpu was blocked for that amount of time), in the svn it uses Pixelbuffer Objects (PBOs) to do so, those use DMA to upload the texture from RAM->GRAM (the cpu can now continue running spring code).

[REVENGE]

I do believe this problem is mainly related to latest drivers, since Linux runs it fine.

[Forboding Angel]

vista ultimate 64bit...

Why would you even bother running vista in 32bit? You would be better off with XP at that point.

[rcdraco]

There is a way to get OpenGL to work in vista, ATI doesn't have a video card with nice openGL support, unless you're willing to pay $150 or more, that's why they're alway cheaper.

[REVENGE]

There is a way to get OpenGL to work in vista, ATI doesn't have a video card with nice openGL support, unless you're willing to pay $150 or more, that's why they're alway cheaper.

...wut...

I run Vista in 32bit because I have 2GB of RAM and driver support in 64bit is lose. Windows 7 now plz.