VSYNC P3D V3

[McDaniel 48]

Very intresting topic, guys, thanks for all the hard work!

 

My settings at the moment, Monitor at 30hz, unlimited, vsync +triple buffer....very smooth.

 

I had a Asus PG279Q, tried to get it smooth with gsync for one week, not possible. I had sync-stutters, worst in turns, funny it's no match against 30hz.

I dont want to say it's impossible for anyone, just dont think that gsync is a magic bullet!

 

As long the scenery and the addon's allow 60fps and more, it's buttersmooth, on almost any setting.

 

The true art is, to get it smooth at around 30fps! :-)

 

And....as posted in another thread, there are addons which induce stutters, example:

In my case the gps in the Aerosoft Twin Otter in on (powered) position, induces a stutter...no more stutterfree taxi....turned off=buttersmooth!

 

McDan out

 

 

 

 

[GSalden 4,656]

Very intresting topic, guys, thanks for all the hard work!

 

My settings at the moment, Monitor at 30hz, unlimited, vsync +triple buffer....very smooth.

 

I had a Asus PG279Q, tried to get it smooth with gsync for one week, not possible. I had sync-stutters, worst in turns, funny it's no match against 30 Hrtz.

 

Like I wrote :

Triple monitor setup with photoscenery + custom ag only :

Monitor 25 hrtz refresh rate + Unlimited + Vsync + Triple buffer

( minimum fps is 26 )

 

Steve, Rob : why do I need a refresh rate of 50 ?

I have the same as 30 hrtz of Robs table but then 25 ....

 

And why should Triple buffer be Off in that situation ?

[Cruachan 705]

I had a Asus PG279Q, tried to get it smooth with gsync for one week, not possible. I had sync-stutters, worst in turns

 

As long the scenery and the addon's allow 60fps and more, it's buttersmooth, on almost any setting.

 

 

I have the same monitor and, yes, that's been my experience as well. Seems that G-Sync is not very effective at low frame rates, but really comes into its own as the frame rates rise. VSync + Triple Buffering + Unlimited Frame Rate seems to provide the best general solution for me in Prepar3D V3.1 as frame rates can vary enormously with changes in scenery density.

 

However, as Steve has pointed out, all this becomes less relevant if you can hold frame rates higher than, say, 40. I have now overclocked my i7-5960x to 4.4GHz (vcore=1.310 steady) and, what do you know, I can be using G-Sync or VSync ON (with triple buffer) or OFF and it makes not a blind bit of difference - the sim remains smooth whatever the scenario tried thus far. My preference still favours VSync ON with Triple Buffering as, for whatever reason, it does seem to handle those lower frame rate occasions (sub 30fps) much more efficiently.

 

Now, if I'm gaming then it's a different story altogether - G-Sync all the way! Wouldn't be without it!

 

Mike

[mikeymike 360]

Rob

With fsx I had LOD 6.5 and terrain looked clear and crisp in distance thou the occasional OOM

 

P3D looks a little shocking in short distance

 

Now was it meant to be in that way to prevent OOM from happening?

 

Do you have the same result with textures in distance being blurred then correct themselves as you fly closer?

 

Cheers

Mike

[SteveW 1,792]

Steve, Rob : why do I need a refresh rate of 50 ?

I have the same as 30 hrtz of Robs table but then 25 ....

 

And why should Triple buffer be Off in that situation ?

Hi Gerard, not sure I understand the Q fully. If you are using 25 fps on a 25Hz monitor, you would get the same result with 50, 75 or 100Hz refresh since there is a refresh at each 1/25th s with all of those frequencies. There's no life or death "need" to set the gpu frequency to the monitor frequency but that is a performance peak, like setting vsync off since the fps is unconfined by refresh timing. Maybe that's where you and Bert get confused. A triple buffer enables the gpu to continue drawing each next frame without waiting for vsync, and keeps banging out the next frame, an alternative to pre-rendering frames. Pre rendering provides precision to the simulation for a very small cost of input lag.

[Manny 1,293]

I had jerky movement in P3D V3.1 and I didn't know what to do

 

I selected "Vsync = On and checked Triple buggering and that fixed the jerkiness and my sim is now smooth..but I had the Screen tearing issue.

 

 

[DISPLAY]

VSYNC=1

TRIPLE_BUFFER=1

 

I googled and found some setting that I tried and that worked  and now my screen  tearing has stopped. 

 

[Graphics]

ForceFullScreenVSync=1

ForceWindowedVsync=1

ForceVSync=True

 

 

Give them a shot

 

 

Edited to add: Spoke too soon..the tearing is still there... 

[GSalden 4,656]

Hi Gerard, not sure I understand the Q fully. If you are using 25 fps on a 25Hz monitor, you would get the same result with 50, 75 or 100Hz refresh since there is a refresh at each 1/25th s with all of those frequencies. There's no life or death "need" to set the gpu frequency to the monitor frequency but that is a performance peak, like setting vsync off since the fps is unconfined by refresh timing. Maybe that's where you and Bert get confused. A triple buffer enables the gpu to continue drawing each next frame without waiting for vsync, and keeps banging out the next frame, an alternative to pre-rendering frames. Pre rendering provides precision to the simulation for a very small cost of input lag.

Thanks Steve,

So you say I can also set the monitors to 50 hrtz.

 

I remember a thread about locking the fps to 30 and the frequency to 30 that which was found smoother than with a frequency set to 60.,,

[Guest]

 

 

I remember a thread about locking the fps to 30 and the frequency to 30 that which was found smoother than with a frequency set to 60.,,

 

Gerard, if you can ensure that you ALWAYS exceed 60 FPS unlimited, then 60Hz will be better than 30 FPS/30Hz.  The problem is, it's very hard to guarantee >60 FPS will a fully loaded (aka lots of Add-ons active) environment (requires not maxing out and checking all the graphics options) ... can be done in base setup (no add-ons, but not a loaded environment).

 

Cheers, Rob.

[Driver170 42]

Rob my system can produce over 30 FPS and upto 40-50. Am i safe to run fps lock 60 in P3D

[SteveW 1,792]

Vernon, if you set a lock of 60, when it's running below that the lock cannot work and so is detrimental to the performance. So when you need the most performance (below 60) you would be giving it a hard time. Even a lock of 20 may not be that successful when you are running a sim that can only do around 30 in unlimited.

[Guest]

 

 

Rob my system can produce over 30 FPS and upto 40-50. Am i safe to run fps lock 60 in P3D

 

Agree with Steve, will not produce fluid results (but nothing "unsafe" about it).  Try frame limit at 37 (assuming your monitor will not operate at 30Hz refresh).

 

Cheers, Rob.

[Driver170 42]

Right i see, i'll be better of running locked 30 or 37 as my monitor is 60hz

[Benjamin H 14]

Agree with Steve, will not produce fluid results (but nothing "unsafe" about it).  Try frame limit at 37 (assuming your monitor will not operate at 30Hz refresh).

 

Cheers, Rob.

 

37 was spot on for my P3D. I am also achieving 40-50 fps almost all the time so 37 did it for me at least. Very smooth experience for me with 37 locked (not internal, but via NI).

[Driver170 42]

I thought you don't use nvidia inspector?

[Benjamin H 14]

Thinking about getting a 30hz capable monitor or a G-sync. What is best with P3D when I am not able to keep 60fps (for Vsync with current monitor) in all situations? G-sync monitor to run unlimited within P3D and Gsync or a monitor that delivers 30hz + Vsync enabled within P3D? Or eventually wait for 1/2 refresh compatibility (if it comes) to P3D?