Is a CPU upgrade worth it in P3D?

[Bob Scott 7,716]

1 hour ago, Rob_Ainscough said:

It provides more frames rendered per second, it's not a measure of "fluidity" ... a second is a long time in computing terms.  Fluidity involves multiple factors:

1.  Your speed view motion requirements (i.e. TrackIR, or aircraft at 90 degree view, aircraft at 0 degree view) for any rendered scene

2.  Your FPS

3.  Input latency

4.  Timeframe deltas

 For example within 1 second and you have 60 frames rendered in that one second but the first 500ms (of that 1 second) each frame was rendering at 33.3ms and the last 500ms they were at 8.3ms then that's not going to be "fluid" but it will be 60 FPS.

Graphics settings, frame limiters, and buffering (be in Vsync, RTSS frame cap, NCP frame limiter) and you have to have a target FPS (30 or 60 or 120).

If I'm using a game/sim and my FPS is all over the place from 120 to 20, that's not a "fluid" experience, that's a hot mess. 😉

I have to agree with Kevin that fluidity actually can come down to both jitter and frame rate, at least in some scenarios.  Even with a perfectly-spaced interframe period (no jitter), if there is a sufficiently rapid angular motion (e.g. an AI plane landing crosswise in front of you while you're holding 90 deg to the rwy for takeoff, or when rapidly panning the view) a higher frame rate will make things appear more fluid, because the angular distance moved per frame is reduced.

At 30 fps and looking in one direction or panning at slow-to-medium rates in-flight, things look quite fluid.  At the same stable 30 fps while panning the view fairly rapidly on the ground (say ~30 deg/sec or higher) you can pick up some "chatter" as the scenery objects begin moving across the frame fast enough that the larger distance between each object's position in each frame makes motion appear as rapidly stepped, rather than smooth/fluid.  Increase the frame rate, and things smooth out as the angular distance per frame is reduced at the faster frame rate.  That's why frame rate targets when VR and/or head tracking is in use are generally quite a bit higher.

[kevinfirth 1,392]

45 minutes ago, Rob_Ainscough said:

Agree, BUT only if you are able to keep the timeframe deltas low. 

That was precisely my point, that I prefer 50fps with trackIR now I can maintain that consistently due to the 10850K and 3090 combo. 🙂

[GSalden 4,656]

Here I am also thinking about upgrading.

Server / 2 display front view : 9740X (14 cores) @ 4.7

Client /1 display  left view : 8700K (6 cores) @ 5.0

On 1 display the 8700K has slightly higher fps (2-3) but the 7940X has many terrain cores and is able to maintain smoothness on 2x 4K displays. I tested the 8700K too with 2xx4K displays and when making turns it had  small stutters….

 

[TurboKen 221]

Another thing worth noting is... not sure which version you are using but v5 works very very well at 30FPS locked in nvidia control panel and run unlimited in the sim. I use ORBX true earth and have a VERY smooth experience.

[mikeymike 357]

On 10/8/2021 at 1:18 PM, TurboKen said:

Another thing worth noting is... not sure which version you are using but v5 works very very well at 30FPS locked in nvidia control panel and run unlimited in the sim. I use ORBX true earth and have a VERY smooth experience.

Can you post a screen shot of your ncp settings?

thanks 

mike

[TurboKen 221]

3 hours ago, mikeymike said:

Can you post a screen shot of your ncp settings?

thanks 

mike

Its actually very simple, I have a 60hz refresh rate monitor. Go into the nvidia control panel scroll down to "vsync" and select "half refresh rate". Then in P3D use unlimited NOT 30, it will be much smoother. 

Again this is for V5. For V4 I used 60fps Vsync lock as 30fps was not nearly as smooth in V4. At least in my opinion.

[mikeymike 357]

1 hour ago, TurboKen said:

Its actually very simple, I have a 60hz refresh rate monitor. Go into the nvidia control panel scroll down to "vsync" and select "half refresh rate". Then in P3D use unlimited NOT 30, it will be much smoother. 

Again this is for V5. For V4 I used 60fps Vsync lock as 30fps was not nearly as smooth in V4. At least in my opinion.

Thanks i will test as I am using gsync it is smooth. Thou I get pauses and stutter sometimes 

thanks 

mike

[mikeymike 357]

On 10/8/2021 at 1:18 PM, TurboKen said:

Another thing worth noting is... not sure which version you are using but v5 works very very well at 30FPS locked in nvidia control panel and run unlimited in the sim. I use ORBX true earth and have a VERY smooth experience.

Adaptive half refresh?

and also fps limiter to 30 in ncp?

 

thanks 

mike

Edited October 11, 2021 by mikeymike

[TurboKen 221]

18 minutes ago, mikeymike said:

Adaptive half refresh?

and also fps limiter to 30 in ncp?

 

thanks 

mike

Yes that's it. I'm doing this from memory I'm at work... And unlimited in sim.