Horrible performance after GPU change

[freeman234 0]

Hi,

 

I've recently replaced my ancient GTX 580 with a new Radeon R290...I've never been a big fan of ATI/AMD and haven't purchased a single one of their GPUs in the last 10 years, but had hoped that this generation would fare better. I know about the problems FSX has with AMD GPUs in general, but did not think it would be this severe. I've spent the last days applying every .cfg tweak known to man, tried all kinds of different Catalyst drivers but cannot wrap my head around this issue.

 

Performance was pretty decent (though not aweseome) running my Nvidia and I had hoped that I could achieve an additional increase...but think again.

Complex add-on scenery where I used to get a stable 30/40 fps now leave me at a mere 10/15 (!) FPS. Simply unplayable. The new Radeon has been excellent with all recent games (which was my primary reason for the purchase) but this decrease in FSX performance made me pop the GTX 580 back in to compare...as I thought that maybe my CPU was finally kicking it or that there was some other issue causing the FPS drop (I actually re-installed Windows as well), but my suspicions were sadly confirmed: performance was still markedly better with the 580.

 

Is anyone else running an R290? Maybe there's something wrong with my GPU itself?

 

Any help appreciated!

[Tabs 2,790]

Some things to try:

 

1. Are you positive you totally eliminated all remnants of the Nvidia driver before installing the AMD one? I use Driver Fusion for this sort of thing.

 

2. Did you delete your FSX.cfg and let it build a new one after the change?

 

3. Have you tried the Bojote Shader 3.0 mod? I remember a lot of people had to use that a while back to get good performance with the AMD cards due to their deficiencies with older Shader 2.0 stuff like FSX.

 

Honestly if you still can, I'd send it back and go back to Nvidia if FSX is a primary concern - get a 770 or 780. You'll almost always get better performance and image quality.

[freeman234 0]

1. Yeah, as I said, I even did a complete format + reinstallation.

 

2. See 1)

 

3. I did find that tweak and was hopeful that it would also fix my problem, sadly it didn't.

 

I'll probably start looking at a 780.

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[westman 253]

Hi.

must be something that wrong with your settings, have you radeon PRO followed Cvearls guide?

I run a 290 its performs very good in FSX , its mutch faster than a 680 (770) and give higher fps than the Titan in Cloud tests.

In the cloud test it shall have almost 2X fps to the 580 with equal settings.

[gboz 153]

Some things to try:

 

1. Are you positive you totally eliminated all remnants of the Nvidia driver before installing the AMD one? I use Driver Fusion for this sort of thing.

 

2. Did you delete your FSX.cfg and let it build a new one after the change?

 

3. Have you tried the Bojote Shader 3.0 mod? I remember a lot of people had to use that a while back to get good performance with the AMD cards due to their deficiencies with older Shader 2.0 stuff like FSX.

 

Honestly if you still can, I'd send it back and go back to Nvidia if FSX is a primary concern - get a 770 or 780. You'll almost always get better performance and image quality.

 

Oops sorry wrong quote.

 

gb.

 

 

Is anyone else running an R290? Maybe there's something wrong with my GPU itself?

 

I've been playing around with an R290 and was not impressed at first.

I ended up getting much better results with the older 13.12 Catalyist driver.

Worth a shot before you trade it in.

 

gb.

[freeman234 0]

Tried everything - but have now taken the coward's way out. Got a GTX780 today, FPS are better than never before (as to be expected). Getting good 40+ with all sliders cranked to 11 and compelx scenery + aircraft - very smooth. Could not be happier!