On 8/20/2020 at 4:48 PM, SteveW said:

I am finding it better to leave the monitor at 60Hz refresh, on this monitor that is the maximum, other monitors vary. On a 30Hz TV that issue with VSync might come up and although setting is at 60 limit, that is in fact limiting to 30fps, setting 30 limits to 15fps.

I am finding it better to leave my monitor at 60Hz refresh to set VSync=On and 30 Limit in MSFS Graphics, Display Settings.

I've worked out the best combo for me but I don't get it !

You mentioned a reduction to 15 and I have that too.

I have a 60hz monitor that can be set to 30hz. In P3D I set the monitor to 30 and lock 30 FPS and Vert Sync ON in nVidia driver. In SIM I have Unlimited and Vert sync OFF. And it's very smooth !

Now in MSFS, if I set to 60 FPS in the SIM with Vert sync ON, and monitor left at 60hz default, it fabulous, as long as I am over 60 FPS ... So small GA over rural areas.

But for glass Twins and jets I only get 45 to 55, so I need to lock at 30 FPS.

So I lock the monitor to 30hz, and set a 30 FPS limit in nVidia driver, but leave vert sync set to App set.

But in the SIM, weird stuff happens.

If I turn off vert sync then obviously the FPS is all over the place.

But if I set Vert sync ON, at 30fps the FPS goes down to 15 locked !

However, setting it to 60 FPS in the SIM, locks it to 30... And it's gorgeous... Same as in P3D.

If I set FPS lock to 30 in the SIM and have nothing set in nVidia, it locks to 30 but is very stuttery. It stays at 30 and CPU/GPU are less than 50 percent, but it's not a smooth 30 FPS at all... Very microstuttery, jittery feel like a 24 FPS movie.

So...

1. Set monitor to 30 Hz.

2. Nvidia driver: Framerate limit 60. (No vert sync setting required)

3. In the SIM: set Vert Sync to ON. And FPS to 60.

I don't get it, but it works. Smooth as silk.

 

(I have to get G sync sorted out as this is all doing my head in !)

Edited August 21, 20205 yr by Gabe777

1 minute ago, Gabe777 said:

I have to get G sync sorted out as this is all doing my head in !)

Best thing you can do. G-Sync eliminates all of that headache above....... best money besides trackIR once can spend to sim, In my opinion.

(PS make sure it’s a proper G-sync monitor, and not just a compatible one) 

Yes I agree. I have an OLED that I may repurpose. But it's 120 Hz so I would still need to limit FPS to upper 60... Presumably via the Nvidia driver.

Then I would get smooth graphics between 40 and 60 I believe.

But I also need an RTX card and want to wait for a 3080. LG OLEDs need RTX cards ..... !?!

But for now, the above works !

Clearly the in SIM vert sync is broken. 60 works, 30 is stuttery, and if I set it to 30 with Nvidia locked to 30, I get 15.

Makes no sense.

Edited August 21, 20205 yr by Gabe777

I have a G-SYNC monitor. Here's the settings I use:

In simulator, set set frame limiter to highest limit ( 60 fps) and turn v-sync off.

In Nvidia control panel, I set set Max Frame Rate to 35 ( 30 is too low for my liking) and G-SYNC enabled.

This works great. This same procedure also works great in P3Dv5, however P3Dv5 also has a Variable Refresh Rate setting that must be checked for best results.

I'm not sure if you need to set G-SYNC for windowed mode in MSFS. I know that after the last release of P3Dv5,  maximized windowed screens are treated as full screen mode( maybe this change is not Lockheed Martin's change, but Nividia driver change ??).

 

 

1 hour ago, Ianrivaldosmith said:

Best thing you can do. G-Sync eliminates all of that headache above....... best money besides trackIR once can spend to sim, In my opinion.

(PS make sure it’s a proper G-sync monitor, and not just a compatible one) 

Do you know if modern large screen TV's have G-Sync? I currently use a standard 42" LG LED TV 1080P and I can only get decent results leaving the refresh rate at 60Hz and using Vsync @ 60FPS in the Sim. Now I actually achieve this a lot of the time but only with the more simpler aircraft and obviously not running Ultra preset. I have tweaked teh settings to get very pleasing results.

I would prefer to keep a bigger screen (50" next) but it would obviously have to be a TV

6 minutes ago, Richdem said:

Do you know if modern large screen TV's have G-Sync? I currently use a standard 42" LG LED TV 1080P and I can only get decent results leaving the refresh rate at 60Hz and using Vsync @ 60FPS in the Sim. Now I actually achieve this a lot of the time but only with the more simpler aircraft and obviously not running Ultra preset. I have tweaked teh settings to get very pleasing results.

I would prefer to keep a bigger screen (50" next) but it would obviously have to be a TV

https://www.nvidia.com/en-gb/geforce/news/g-sync-compatible-2019-lg-tv-available-now/

 

Have a look there.... 🙂 

 

Bear in mind, on a TV the VRR is only a range:- 40-60Hz Variable Refresh Rate range. (you would need to maintain at least 40FPS).

On a proper G-SYNC MODULE monitor it starts at 1HZ right up to 140HZ+....Which CAN make difference using flightsim's, because we all drop to 30FPS or lower  sometimes.....

Edited August 21, 20205 yr by Ianrivaldosmith

4 hours ago, Ianrivaldosmith said:

https://www.nvidia.com/en-gb/geforce/news/g-sync-compatible-2019-lg-tv-available-now/

 

Have a look there.... 🙂 

 

Bear in mind, on a TV the VRR is only a range:- 40-60Hz Variable Refresh Rate range. (you would need to maintain at least 40FPS).

On a proper G-SYNC MODULE monitor it starts at 1HZ right up to 140HZ+....Which CAN make difference using flightsim's, because we all drop to 30FPS or lower  sometimes.....

Thank you I will investigate this,

I've set my sim up to try and maintain 60FPS currently so should be able to maintain 40 FPS

5 hours ago, Ianrivaldosmith said:

https://www.nvidia.com/en-gb/geforce/news/g-sync-compatible-2019-lg-tv-available-now/

 

Have a look there.... 🙂 

 

Bear in mind, on a TV the VRR is only a range:- 40-60Hz Variable Refresh Rate range. (you would need to maintain at least 40FPS).

On a proper G-SYNC MODULE monitor it starts at 1HZ right up to 140HZ+....Which CAN make difference using flightsim's, because we all drop to 30FPS or lower  sometimes.....

Sorry a little off topic.
 

With a g-sync monitor (which has the g-sync module) what happens below 30fps?

6 hours ago, michaelray said:

Sorry a little off topic.
 

With a g-sync monitor (which has the g-sync module) what happens below 30fps?

It’s blurs things. So, it keeps it smooth, but, you can tell you’re below 30fps. However it’s still flyable (for some) until it hits about 25fps. However, that is much better than a VRR rate of say 40-140, because it means G-Sync doesn’t just disconnect, which you would see instantly. 
 

Minimum Refresh Range

Once the framerate reaches the approximate 36 and below mark, the G-SYNC module begins inserting duplicate refreshes per frame to maintain the panel’s minimum physical refresh rate, keep the display active, and smooth motion perception. If the framerate is at 36, the refresh rate will double to 72 Hz, at 18 frames, it will triple to 54 Hz, and so on. This behavior will continue down to 1 frame per second.

Regardless of the reported framerate and variable refresh rate of the display, the scanout speed will always be a match to the display’s current maximum refresh rate; 16.6ms @60Hz, 10ms @100 Hz, 6.9ms @144 Hz, and so on. G-SYNC’s ability to detach framerate and refresh rate from the scanout speed can have benefits such as faster frame delivery and reduced input lag on high refresh rate displays at lower fixed framerates.

PS some useful gsync info:-

If you're running behind the native refresh rate at 60Hz, there are moments where you essentially get 30fps while the monitor waits for the new image.

So, gsync eliminates that wait time and refreshes the monitor only when the next frame is available, making the image smooth and stutter free. Perfect for flight sims. 

I came to the conclusion that VSYNC is not required in this game. I set the the NVIDIA control panel to defaults, then only engage "Maximum Performance". In the sim, VSYNC off, frame limiter off - there's no tearing or whatsoever, and performance, for me, is much better compared to setting the NVIDIA control panel to "Half refresh rate." Sometimes, it's all easier than you may think.

2 hours ago, Ianrivaldosmith said:

It’s blurs things. So, it keeps it smooth, but, you can tell you’re below 30fps. However it’s still flyable (for some) until it hits about 25fps. However, that is much better than a VRR rate of say 40-140, because it means G-Sync doesn’t just disconnect, which you would see instantly. 
 

 

 

Great thank you for the detailed response. I run my monitor at a 30Hz refresh rate. So I tune my sim not to fall below this and use v-sync.

The tech description mentioned below 36fps it starts inserting duplicate refreshes. At 30fps do you actually start to see blurring of the image?

Edited August 22, 20205 yr by michaelray

1 hour ago, michaelray said:

Great thank you for the detailed response. I run my monitor at a 30Hz refresh rate. So I tune my sim not to fall below this and use v-sync.

The tech description mentioned below 36fps it starts inserting duplicate refreshes. At 30fps do you actually start to see blurring of the image?

I personally don’t notice it until around 25fps, and I use track IR too........ 

4 minutes ago, Ianrivaldosmith said:

I personally don’t notice it until around 25fps, and I use track IR too........ 

Great thank you. I will have a serious think about a g-sync monitor.

1 hour ago, michaelray said:

Great thank you. I will have a serious think about a g-sync monitor.

If you’ve spare cash, g-sync ultimate is good 

11 minutes ago, Ianrivaldosmith said:

If you’ve spare cash, g-sync ultimate is good 

I have been thinking about the LG 38GL950G-B. I like ultra wide and the 1600 would be a step up from my 1440. Not really HDR though.