I don't believe these stories of zero stutters at less than 60 fps. WarpD has explained above why they must be there if fps drops below the monitor refresh rate. They are there. The extent to which you notice them certainly differs from person to person. If you don't notice them, you are lucky. I certainly do see them depending on the situation (e.g. they are much more noticeable in turns than in level flight).

 

It is possible to have no stutters below 60 FPS if the frame rate you're maintaining and your monitor's refresh rate are in sync. This is why 1/2 refresh rate V-Sync works perfectly.

It is possible to have no stutters below 60 FPS if the frame rate you're maintaining and your monitor's refresh rate are in sync. This is why 1/2 refresh rate V-Sync works perfectly.

Adaptive Vsync. 1/2 has no effect or perfect at least its been my understanding as LM has explained it. 60 or 30 or nothing.

Adaptive Vsync. 1/2 has no effect or perfect at least its been my understanding as LM has explained it. 60 or 30 or nothing.

 

There is no reason 1/2 refresh rate V-Sync should have any stutter, assuming you can always maintain 30 FPS. In this situation, you see a new frame every second refresh of your monitor. No stuttering should take place.

 

And I don't understand the "60 or 30 or nothing" statement. If your monitor's refresh rate is 40Hz (I don't think a monitor like that exists though) you need 40 FPS constantly for no stutter. If you have a 120Hz monitor, you need 120 FPS for no stutter, or 60 FPS at 1/2 refresh rate V-Sync, or 30 FPS at 1/4 refresh rate V-Sync. With G-Sync this kind of stutter is eliminated because your monitor's refresh rate will be constantly in sync with your frame rate, though you'll need to cap your FPS to avoid big frame rate jumps.

I don't believe these stories of zero stutters at less than 60 fps. WarpD has explained above why they must be there if fps drops below the monitor refresh rate. They are there. The extent to which you notice them certainly differs from person to person. If you don't notice them, you are lucky. I certainly do see them depending on the situation (e.g. they are much more noticeable in turns than in level flight).

 

But apparently some of us are getting much less stuttering than others, either due to the aircraft or addon scenery we are using, individual settings or because they are somewhat system specific.  Most of the time the stutters I get with v.2.2 that are at all obvious are few and far between.  And, according to Beau at LM, there are AffinityMask settings that can reduce stuttering somewhat [see my earlier post].

I don't believe these stories of zero stutters at less than 60 fps. WarpD has explained above why they must be there if fps drops below the monitor refresh rate. They are there. The extent to which you notice them certainly differs from person to person. If you don't notice them, you are lucky. I certainly do see them depending on the situation (e.g. they are much more noticeable in turns than in level flight).

I don't believe the stories either.  They are there and they are annoying.  All u have to do is fly close to the ground and watch the scenery pass by.    For those not having issues consider yourself lucky.  

They don't have to be there.  It's just that no one has ever come up programmatically with a solution.

 

 

I just think it is a shame that FSX can look (almost) fluent at 30 fps (with the 1/2 refresh rate vsync) and P3D even though it performs better even with more eye-candy looks stuttery at 40 fps.

 

This is not my experience, i.e. 'looking stuttery at 40 fps', however we haven't really established much detail yet.   How I would describe this is that at frames over about 24 or so, video while flying is very very smooth-w/ one odd caveat related to cloud shadows:  I can have good frame rate (24-40's sometimes) and less than 99% GPU utilization, yet get some stuttering behavior.  However, when I for example pan the VC, or make a fast turn for example while taxiing, video is no longer perfectly smooth.  Once 60 FPS is achieved, then I can do anything and remain buttery floating smooth while flying, panning, etc.

Bring on nVidea's G-Sync. 

Bring on nVidea's G-Sync.

Amen

Bring on nVidea's G-Sync. 

It does seem very hopeful G-Sync will provide meaningful improvement in smoothness.  Ultra smooth does take immersion to a higher level for sure--when do we expect to see these monitors, or are they already out?  And what video cards are compatible?

I don't believe the stories either.  They are there and they are annoying.  All u have to do is fly close to the ground and watch the scenery pass by.    For those not having issues consider yourself lucky.

 

I only fly small GA aircraft . . . 90% of my flight time in P3D has been in either A2A's J3 Piper Cub or the C172 Cessna. So I'm flying "close to the ground" as much as anyone.  I don't believe that anyone is intentionally misrepresenting the truth about their stutters. What I do believe is that the intensity and frequency of stutters vary greatly between users. I know what I'm seeing in my own flights, while others are reporting that the stutters are so frequent that they are ruining the immersion of the sim.

 

I suspect that the biggest factor that affects stutters (beside the obvious FPS/monitor refresh relationship) are the various aircraft that we are flying.  And today this following post was made on the official forums, in the "Windows 7 or 8.1 ?" thread, which indicates that the operating system we are using can have an effect on the stutters (depending on the aircraft and its instrument panels):

 

Quote from Beau on May 13, 2014, 10:32

If you plan on using aircraft with several high resolution instrument panels and you have a fairly modern video card, there is a pretty good reason to use Windows 8 or 8.1.  In 2.2 we added native 5551 texture support which is only supported in Windows 8.  Gauges are rendered in 5551 format because of their GDI heritage.  If the 5551 DXGI format support is not found, then gauge textures must be inline converted to 8888 format each frame before being copied to the card.  For larger panels, that conversion could take a much as a millisecond for a single panel.  If you have a VC with several VC panels or you're doing a home cockpit with lots of full screen 2D panels, using the native 5551 support can shave several milliseconds off your frame time.  It's really too bad that 5551 support wasn't rolled back to windows 7 with the platform update.

It does seem very hopeful G-Sync will provide meaningful improvement in smoothness. Ultra smooth does take immersion to a higher level for sure--when do we expect to see these monitors, or are they already out? And what video cards are compatible?

There are some companies making some monitors g sync compatible at the moment. Just do a google search. I believe all 600 series and up are compatible.

It does seem very hopeful G-Sync will provide meaningful improvement in smoothness.  Ultra smooth does take immersion to a higher level for sure--when do we expect to see these monitors, or are they already out?  And what video cards are compatible?

Basically you need an NVIDIA GeForce GTX650Ti BOOST GPU or higher: G-Sync System Requirements

 

You can get a G-sync monitor now, but these early models are going for a premium price (as in nearly double the cost of a regular monitor), but more companies will be releasing G-Sync monitors later this year, which will likely bring the prices down.

How can anyone really get 60 fps?  I have a pretty decent rig, but with ORBX, add on planes and traffic, I couldn't get anywhere near that unless I'm flying in the middle of nowhere. 

How can anyone really get 60 fps?  I have a pretty decent rig, but with ORBX, add on planes and traffic, I couldn't get anywhere near that unless I'm flying in the middle of nowhere. 

At 60 currently taxiing to 35L at FB's KDEN HD in full FTX CRM.   At gate A1 frames were around 43.  I have cloud shadows at 80m and I am low cloud density which w/ this weather is actually somewhat densely distributed--about 50% clouds, 50% clear.   The key here is the CS Super MD80.   It's very gentle on frames.   The RA Duke at the same gate was only 29.  There was a brief segment as I was flying thru the cloud layer where frames tanked to the low 20's.  Once just above the cloud layer frames shot back up again into the 50's flying over Denver in FTX CRM scenery w/ vector lights enabled.  This is a dusk flight to KSLC.