Has anyone experienced sound stuttering while flying in the Virtual Cockpit  The stuttering goes away right after I unplug the AC adapter and run my laptop just on battery. Very weird situation. I have Toshiba Qosmio X550. I7 Quad Core, Nvidia 360GTS Card, 8GB RAM, 1TB Hard Drive. FS 9.1 

 

 

Lock your FPS to 100 or less in FS.

Lock your FPS to 100 or less in FS.

 

I did lock it to 100, one step below Unlimited. It did work, got rid of sound stuttering  but my questions is, will it slow down the performance, because I read somewhere that if you FPS not set to Unlimited, your performance will be less.

 

Nikita

Not with FS9 as far as I can tell.  The fps limiter in FS9 is different than the one on FSX.  It's FSX that a lot of people set to unlimited especially when flying airliners.

I've tried different settings on my FS9 and find I get the best performance when locked @ 60fps.  When set to unlimited, I get stutters during spikes in fps (from steady 45 and spiking to 120 for example) which is quite often.  When locked @ 60, it's silky smooth.

If locked to 60 compared to say 90 or 100, doest it make much difference in the case of performance  Because sometimes i get fps well over 100, not a lot though. But when I limit the fps, the Sim will not be as smooth as it was over 100 fps because i limit it to say 90.

You do know that FS is only going to refresh as fast as your monitor can refresh, correct?

 

So a 60Hz monitor can only refresh 60 times per second so it doesn't matter if you are getting 90, 100 or over 100 FPS because the monitor cannot refresh that fast. Yes the FPS counter will show more, but that is not what the monitor will actually draw.

So setting 60 FPS then is the best?

The highest if your monitor is refreshing at 60Hz.

Yes my monitor refresh rate is 60, but if i do set it over 60 say, 90 for example, what does it mean in terms of performance. Will it have no effect, or my human eye won't spot the difference

You'll be wasting FPS and risking some blurries. That's why they say that, for max smoothness, apply VSync and lock FPS at your refresh rate.

What happens if I do not apply V-sync. I don't have screen tearing. I heard it slows down performance

Yes my monitor refresh rate is 60, but if i do set it over 60 say, 90 for example, what does it mean in terms of performance. Will it have no effect, or my human eye won't spot the difference

Your monitor will not be able to refresh that fast so it will refresh at 60 FPS even though the counter might say more than that. And you will be wasting FPS as the other poster wrote.

Ok, thank you for the advice

 

Cheers,

 

Nikita

My other questions is: If your fps is limited to 60, why then MS 2004 has a slider which you can set to unlimited?

This is what I found out:

 

If you restrict Frame Rate (as opposed to Unlimited), then if the sim scenery is changing faster than the restricted FR, you will get a stutter.In rapid manoeuvres such as turning on the ground or airborne roll/pitch, the distance of scenery element movement from frame to frame can easily exceed a fixed frame rate. When this happens there will be a perceptible "jerk" between frames.Phrased another way, the amount of scenery change between this frame and the next, needs to be small enough that one's brain doesn't notice the change. Rapid motion needs a high FR so that the amount of movement is less than that retained by persistency of vision. (ie the duration of an image retained by the brain after that image has gone- classically reckoned but oft debated, as less than 1/16 of a second.) If frame rate is fixed, there are almost certainly going to be occasions where the frame to frame movement is great enough to be detectable- appearing as a stutter.My take is to set it to unlimited and take advantage of whatever horsepower your CPU has to offer. Why put a governor on a race car?

You do know that FS is only going to refresh as fast as your monitor can refresh, correct?

 

So a 60Hz monitor can only refresh 60 times per second so it doesn't matter if you are getting 90, 100 or over 100 FPS because the monitor cannot refresh that fast. Yes the FPS counter will show more, but that is not what the monitor will actually draw.

 

Just to clarify on what actually happens with this - if you have Vsync off, the CPU and GPU absolutely are generating/drawing more than 60 FPS and trying to send that to the monitor but you're going to see "tearing" on the actual image where partial frames are drawn. When Vsync is off the GPU has absolutely no idea what the refresh rate is, nor does it care, and it'll just fire as many frames as it can out to the monitor.

Even though you set target frame rate say at 90 as oppose to unlimited?