FPS drop in fog

[xxJohnxx 21]

Hi,

 

Today I took my virtual Beech for a ride to Innsbruck. Descending trough about 9000 feet a fog layer (or a cloud) came up and the visibility was reduced. However also my FPS dropped from 30 to 14.

This can't be normal, or is it? I mean it runs at a solid 30 all the flight until approach where it starts to drop. As I passed below the fog/cloud layer about 300-500 feet AGL I had my 30 FPS again.

This wasn't the first time I noticed that, but today it has been really bad.

 

Did I mess something up in my settings or is this normal?

 

Best regards,

 

Jonathan

[LHookins 3,117]

FPS dropped from 30 to 14.

 

That seems to be a problem with ATI video cards. I often get similar drops any time the sky is full of clouds.

 

Hook

[xxJohnxx 21]

Hi Hook,

 

That seems to be a problem with ATI video cards. I often get similar drops any time the sky is full of clouds.

 

Hook

 

Unfortunately I got an NVIDIA GTX 560 Ti Direct CU II

[TechguyMaxC 516]

What AA setting do you use?

[xxJohnxx 21]

8xSQ [Combinied: 2x2 SS + 2x MS]

and Transprency Supersampling is 2 xSupersampling

 

I had 8xS set a few weeks ago and the problem also has been there. Should I try to lower it further down?

[LHookins 3,117]

Unfortunately I got an NVIDIA GTX 560 Ti Direct CU II

 

You just saved me some money! If nVidia is getting lousy frame rates in clouds, no sense buying one to replace a perfectly good ATI.

 

Hook

[TechguyMaxC 516]

My gut feeling is your AA setting is too high. Try dropping the transparency component in particular. If that doesn't help try switching to plain old 8xS

[Damian Clark 1,331]

Also please note that Overcast Enhancement feature in AS2012 SP2 beta has a performance penalty as more clouds need to be drawn. You can disable overcast enhancement if you prefer higher frames vs. more solid overcast.