Hi guys,

here is a question I could not find any answer by myself:

What exactly does the flag "use system memory" ?

I have the following problem:

1st PC:
Laptop, Centrino 1,7 Ghz, ATI Radeon 9000 mobility, 512 MB RAM.
All settings (DxDraw and all images in list) use system memory = true
-> Framerate about 100 (I'm doing lot of graphics at a time)

All settings (DxDraw and all images in list) use system memory = false
-> Framerate about 15-20!!!!

2nd PC:
Desktop, Athlon 2000XP GeForce 4 Ti 4200, 512 MB RAM
All settings (DxDraw and all images in list) use system memory = true
-> Framerate about 50 (I'm doing lot of graphics at a time)

All settings (DxDraw and all images in list) use system memory = false
-> Framerate about 6-10!!!!

In some cases (when doing no blurring, no alpha or something like that about 100), weird, eh?

Why is this setting slowing it all so much down? On other systems it seems that use system memory is more effective when set to FALSE!

I can't image what this really affects. I thought that system memory means loading the graphics to RAM instead of video memory, that would explain why the graphics are fasten on a shared memory graphic card (in laptops). But on my desktop PC it slows the system also down when set to false.

Any hints? Would be very nice, because if I understand the meaning of it, I could get the fastest framerate out of my game on every different PC by letting the user set this flag or not.

Greetings,
Dirk