Crossfire Problems... again?

[neonism]

Crossfire Problems... again?

I've written this on the gog forums but since we now have an official forum i might write it in here also )

Hio there

In the beginning Crossfire users had problems running the game but they were eventually fixed by AMD by releasing drivers + caps. Nearly two months ago i finished the game with one path.

Game was running really well with my 2 amd 5850 50-60s all the time with everything at maximum except ubersampling and motion blur which were set to off (example 50s outside the tent in the begining or upper 40s-50s in the bar at Vergen).

Some days ago i fired the game again in order to complete the other path and then things went wrong. Same spots as before the game gives me much worser performance (example lower 40s outside the tent in the beginning and 30s-lower 40s in the bar at Vergen)

I thought it might be an issue with AMD drivers so i reverted to the ones that worked just fine when i completed the game but got no increase in performance. Thinking about it CDPR made changes with patch 2 (or 3 i don't remember) that were supposed to increase the game's performance for SLI and Crossfire users. Maybe they changed something that made the AMD drivers worse for the game.

Anyway i've been playing with settings from the game and from the AMD CCC still without good results until i went back to Radeon Pro. When the game was released and we didn't have a profile we used Radeon Pro to at least try to play the game, at that time using Radeon Pro forcing profiles like dirt2 or AFRFriendlyd3d improved performance but still the lower fps were still too low (like 30s) so it wasn't a good solution.

Yesterday i tried again Radeon Pro with AFRFriendlyD3D profile and MVPUMode Alternate Frame and guess what i made the game work like it used to be when Catalyst drivers worked well with the game. Now i get good framerates outside the tent at the beginning (50s) or the bar at Vergen (upper 40s-50s).

How is the performance now for people with Crossfire setups using AMD Drivers and CAPs? did they experience this loss in performance?

 

[Ellathar]

I've played version 1.0 of the game with the Catalyst when it didn't contain any fix, and my performance were somewhere around 20 FPS in the most demanding areas with my 4890 Xfire (and around 30-40 everywhere else). With or without Xfire, it was the same.

Then I played the game again with 1.35 Hotfix along with the latest Catalyst, and apart from a few spots where my framerate was around 30 FPS (ones you describe, outside the tents, and in Floatsam Pub), I ran 40-60 FPS everywhere (Vsync on so 60 is the best I can do anyway).

So, clearly, I can confirm there is no new problems coming with 1.3 patch. The performance has been clearly improved, I can as well run without crossfire and confirm it again.
Have it been lowered compare to prior 1.3 in a few spots, maybe, but that's nothing in par with the original version.

However, in my opinion, nothing changed with TW2, only ATI Catalyst did a difference, meaning I'd rather blame ATI than CDPR on that.