Some bug with the light

[bird-1]

Once I open the lights, cabin lights or navgation lights, the fps will drop from 60 to 30+,is this any bug? :(

My graphic preset is low.

 

 

 

Edited August 13, 2011 by bird-1

[EtherealN]

Depends on your GPU settings, how heavily tasked it is. Lighting is very computation-intensive, and it is entirely possible for the addition of those lights to cause your machine to "switch" from being CPU-bottled to GPU-bottled.

 

Since we have several machines, if you supply a track and your exact settings I can run it on my machine (since we have the same CPU) and compare for you.

Also, to ensure comparison is valid, ensure that you have no settings set through driver. Only settings set through the game itself.

[bird-1]

Depends on your GPU settings, how heavily tasked it is. Lighting is very computation-intensive, and it is entirely possible for the addition of those lights to cause your machine to "switch" from being CPU-bottled to GPU-bottled.

 

Since we have several machines, if you supply a track and your exact settings I can run it on my machine (since we have the same CPU) and compare for you.

Also, to ensure comparison is valid, ensure that you have no settings set through driver. Only settings set through the game itself.

 

In fact I first found this in multiplayer mode,then I out of the server and choosed INSTANT ACTION- QUICK START - "Easy-Russian Foothills-Fall " to get rid of the influence by the server:

 

I have not changed any settings of the graphic card and the CPU frequency was locked at 3.9GHz, the graphic card is bottleneck for the A10C so I set the graphics option "Low":

 

Half an hour ago I tested this for another time,I get this:

1, F1 view , when I open the lights by "L"

 

 

2, F2 view, when I opened the lights by "Alt+P"

 

 

3,F1 view, I looked at the sky,when I open the lights the fps droped to 40+

 

 

All the screenshots were taken when the fps was stable.

Edited August 13, 2011 by bird-1

[BTTW-DratsaB]

Yep, lights are for some reason an absolute killer on FPS. I don't know why they cost so much performance in DCS. I think the last time I had problems with a light in game was HalfLife 2's flash light back in 2004. My guess is it's some down side of still using the ancient Lock On engine. Nowadays lights should not cause modern hardware in game to loose 20FPS

 

Another light that murders fps is the green cockpit flood light.

Edited August 13, 2011 by BTTW-DratsaB