Strange performance issue - window decorations

[kororos]

Hello,

 

I am facing the following really strange behavior.

 

I set X-Plane to full screen mode and performance is rather poor (at ~20fps).

I set X-Plane to Windowed mode, with the window maximized. The performance is exactly the same.

Fianlly, I reduce just a notch the size of the window (so that the borders of the window are visible). The performance is boosted in a big way to 45fps - without altering any other rendering settings.

 

I cannot understand this.

 

I read somewhere that even at full screen, X-Plane is running in windowed mode from a drivers perspective, with the window decorations hidden. This would explain why in full screen mode and in maximized window the performance is the same. However, why is there such a huge performance gain with the window decorations shown, but a tiny change in the window size?

 

My configuration is:

 

CPU: i7 4770k

GPU: NVidia GTX770

RAM: 16GB

 

Below are some screenshots:

 

Window with border:

 

Window Maximized:

 

Full screen:

 

Thanks

 

Edited September 7, 2014 by kororos

[sqrt(-1)]

I have heard of this a few times before, but I've never yet seen this behavior on my machine.

[FloB]

Can you add your driver settings, rendering settings and driver version no?

This seems to be related to GPU performance and thus driver (settings) may be crucial.

 

Flo

Edited September 7, 2014 by FloB

[kororos]

Sure,

 

my driver version is the latest NVidia Release GeForce 340.52

 

A screenshot of the rendering settings is below.

 

 

Thanks

[FloB]

I can't reproduce this on my rig. No idea what this is related to.

 

Steps that I would take:

0. Reduce texture resolution and check again.

If that doesn't do the trick

1. Update X-Plane with latest installer.

2. Move preferences to another place (don't delete them - so you can move them back again)

3. Move Plugins... (s.o.)

3. Start X-Plane and see if that helps

If not:

4. Install an older WHQL driver, leave everything at default and see if that helps.

5. Have a cup of tea

 

Good Luck

Flo