More help. Now I'm confused. Research says that ATI with direct3d works fine. ATI with opengl works crappy. My experiences bear this out. What I'm confused about, is what does CFS3 use? Is there a setting like in IL2 to switch it? I can't help but shake the feeling there's a silver bullet setting that I need to change.
I'd be shocked and amazed to find out CFS3 can be run in Glide(or OpenGL). Pretty certain it's limited to D3D rendering, but I could be wrong. Also not so sure about ATI cards not being able to run OpenGL games with any success. Played tons of IL2 with the X1950XTX I had, and it ran slicker than a can of WD40 in either D3D or Glide. As I recall, it actually ran somewhat smoother and even looked better in OpenGL. I think the only thing I couldn't do was set the terrain details to "Perfect", whereas I could when I swapped that card out for the 8800GTX.
I don't think it's any coincidence that both you and Gousgounis are experiencing an almost identical phenomenon here. Considering you were both able to run P2 at reasonable frames and detail settings, we first have to ask ourselves this question; What's changed so drastically between P2 and BHaH in the graphics department that would cause such a noticeable performance decrease???
I can think of a couple of things, but the first thing I'd suspect is the new Hi-res terrain. The difference on my system is nothing short of visually astonishing, and yes, when I leave my sliders set the way they were for P2, there's a tangible performance hit.....particularly around airfields. Fortunately it's not significant enough to force me into lowering my settings, but my frames drop to close to half of what I was used to under certain circumstances. The fact that they were exceptionally high in P2 allows me to get away with it though.
Why the performance hit seems more severe on ATI products from the pattern we may be seeing is beyond me. It isn't uncommon for products from ATI and Nvidia to differ significantly in performance levels when it comes to specific game titles. All you have to do is look at some of the benchmark results that pit the two against eachother to realize there
are game-specific advantages and disadvantages.
I'm not saying that the problem you're seeing can't be solved at the driver, low-level hardware settings, or game configuration level. That solution however, may be almost as elusive as the holy grail.
What I would recommend is a fresh install of a set of drivers you
know worked well in P2. Set up your game cfg exactly the way you had it previously. Dial all filtration methods (AA-AF-Triple Buffering and all that stuff) back to Zero......run the game and see what kind of FPS you get. If you get decent frames at that point, you can then try to increase some of the filtration one method and one increment at a time. If the game runs like crap with
no filtration at all engaged, try a different set of drivers or two, employing the same methodology.
If the game
still runs like crap regardless of driver versions, config settings and the fact that you've sacrificed a 3-eyed,one-legged toad and his sister to the computer gaming Gods......it may just be time to jump back on Nvidia's bandwagon. I did.....and don't see myself ever going back to ATI. Good cards for the most part, but problematic enough at times to make one reconsider the price vs performance advantages of going with a cheaper solution.
Almost makes me wish I still had an ATI card set up here so I could attempt to troubleshoot this issue firsthand. Unfortunately, that ain't the case, so all I can really offer are generalizations.
Hope you get it solved.....one way or the other.
Cheers,
Parky