BVE version v FPS

I'm having real trouble getting any version of BVE above 1.4.0.10 to run with any decent FPS.

I have two rigs both with XP SP3
- Athlon x2 250 3GHz 3G ram on board graphics which I use for my programming/email/web browsing etc/ this runs 1.4.0.10 at 36fps, 1.4.2 at 7 fps and 1.4.3 at 0 fps
- Intel i5, 3.1GHz 3G ram Radeon 7850 graphics card, used for FS games (FS2004, FSX & X-Plane) runs 1.4.0.10 at 65fps, 1.4.2 at 13fps and 1.4.3 at 9fps.

I've looked at odakyufan's changelog and the differences (on the performance side), are mostly to do with anti-aliasing. I've tried all the anti-aliasing settings even switching them off but the rates are still pretty much as above.
What was the main difference between 1.4.0 and 1.4.2/3 ?
Is this likely to be GPU or CPU related ?

Cheers for any ideas . . . .

Sir RWremote
I do have better good luck of FPS in the openBVE when I do configuration this

openBVE\Settings\Options.Cfg

[display]
vsync = false
loadInAdvance = true

[quality]
interpolation = anisotropicFiltering
anisotropicFilteringLevel = 8
anisotropicFilteringMaximum = 16
antiAliasingLevel = 2
transparencyMode = 1
viewingDistance = 900
motionBlur = low


I greatly hope this is of usefulness for you.
Good day and night for you.
HK

I take it that you have .Net 4.0 installed?

I'm no Microsoft guru, but I know that OpenBve was compiled using .Net4.0 and 4.5 wasn't out at the time. I don't know if the two versions are that different, but as they will both co-exist on Windows, it might be worth downloading .Net4.0. to see if it improves matters.

I'll learn something too! 

The crux is in your OS - OpenBVE isn't optimised for 64-bit systems AFAIK. But I think I already said this once. Same goes for call2's suggestion of installing .NET 4.0 additionally, which you back than planned on doing?

Thanks a lot HijauKuda, I made those changes and things have improved.

The PC with the dedicated Graphics card now gets 22fps on 1.4.2 and 1.4.3 which is a great improvement and OpenBVE is now playable using the latest version.
(Still have a big jump between 1.4.0 and 1.4.2 though. . . . . )
The PC with on-board graphics did not improve much, but I think that is to be expected.

Thanks again to everyone who replied.

Sir RWremote
Good news for you. I do believe this setting configuration of most importance
loadInAdvance = true

Good day and night for you
HK

Quork wrote:The crux is in your OS - OpenBVE isn't optimised for 64-bit systems AFAIK. But I think I already said this once. Same goes for call2's suggestion of installing .NET 4.0 additionally, which you back than planned on doing?

That's strange.   I have Windows 7 Home Premium 64-bit, and I don't ever recall having any problems running the program and I have all settings on medium-high to high, with antianalising at 16. It varies between 30ish to 60 fps and the lowest I can recall is probably in the 20ish range. I'll have to check on that, though.