Looking at the FPS display of the dev mode next to each one there is latency measurements. In my case the CPU is much lower than the GPU. around 10ms compared to around 18ms of the GPU. Is this the correct balance ? Or in order to avoid some stutters i should try to bring those numbers closer to each other and they will work more balanced ?

4 minutes ago, roi1862 said:

Looking at the FPS display of the dev mode next to each one there is latency measurements. In my case the CPU is much lower than the GPU. around 10ms compared to around 18ms of the GPU. Is this the correct balance ? Or in order to avoid some stutters i should try to bring those numbers closer to each other and they will work more balanced ?

Looks like the GPU is bottlenecking your fps.  I would think you would want them as close together as possible so one isnt bottlenecking the other.

Best to be bottlenecked by GPU. CPU bottlenecks create terrible stutters. Test over a dense area like downtown NYC, these tax CPU quite hard.

My experience is that you can run the GPU flat out without stutters, but the minute the CPU gets overwhelmed stutters will not be far behind. My CPU graph is solid yellow, with occasional green spikes and I get no stutters. My GPU is red with occasional yellow spikes. If you are still getting stutters use Process Lasso. Plenty of posts on it. 

1 minute ago, RobJC said:

My experience is that you can run the GPU flat out without stutters, but the minute the CPU gets overwhelmed stutters will not be far behind. My CPU graph is solid yellow, with occasional green spikes and I get no stutters. My GPU is red with occasional yellow spikes. If you are still getting stutters use Process Lasso. Plenty of posts on it. 

I am using but i think that some stutters are simply CPU/GPU imbalance. I mean i got [email protected] and RTX2070. 

I think that even when i see main thread stutter its due to the GPU cant keep up with the CPU.

4 minutes ago, roi1862 said:

I am using but i think that some stutters are simply CPU/GPU imbalance. I mean i got [email protected] and RTX2070. 

I think that even when i see main thread stutter its due to the GPU cant keep up with the CPU.

What are your settings in process lasso? Also, have you tried to turn off real-time weather and stop using any rolling or manual caches? 

Just now, RobJC said:

What are your settings in process lasso? Also, have you tried to turn off real-time weather and stop using any rolling or manual caches? 

In lasso i simply disabled the windows dynamic or whatever that's called, set MSFS to low and using the ultimate performance profile. The caches and weather didn't do much. 

5 hours ago, roi1862 said:

In lasso i simply disabled the windows dynamic or whatever that's called, set MSFS to low and using the ultimate performance profile. The caches and weather didn't do much. 

Try priority class at "above normal" and "high", set application power profile to "Bitsum highest performance" and I/O priority to "high". Also make sure no apps are running including AV. 

15 hours ago, RobJC said:

My experience is that you can run the GPU flat out without stutters, but the minute the CPU gets overwhelmed stutters will not be far behind. My CPU graph is solid yellow, with occasional green spikes and I get no stutters. My GPU is red with occasional yellow spikes. If you are still getting stutters use Process Lasso. Plenty of posts on it. 

For me it looks like this most of the time: 

http://imgur.com/gallery/tJFGEj3 

And then while flying along in a small GA plane low and slow I will get those about every 30 sec- 1 min

These are supper annoying.

Edited October 6, 20205 yr by roi1862

For me also its always GPU limited with an Rtx2080 and a four year old processor. Almost any setting combination within MSFS give the same result. The only way to get cpu limited is by lowering the screen resolution. I have 3 x 1080 screen which in term of pixel is about 20% less than a 4k screen. 

18 minutes ago, kama2004 said:

For me also its always GPU limited with an Rtx2080 and a four year old processor. Almost any setting combination within MSFS give the same result. The only way to get cpu limited is by lowering the screen resolution. I have 3 x 1080 screen which in term of pixel is about 20% less than a 4k screen. 

I guess if youll set your LOD to 200 and object level of detail to 200 youll get horrible CPU limited stutters.

7 hours ago, roi1862 said:

For me it looks like this most of the time: 

http://imgur.com/gallery/tJFGEj3 

And then while flying along in a small GA plane low and slow I will get those about every 30 sec- 1 min

These are supper annoying.

That looks very good. Now have Process Lasso up sorted by CPU % and see which app jumps up when you get a stutter. 

45 minutes ago, RobJC said:

That looks very good. Now have Process Lasso up sorted by CPU % and see which app jumps up when you get a stutter. 

No app really... its pretty much something in the sim

....

 

Edited October 6, 20205 yr by kama2004

8 hours ago, roi1862 said:

I guess if youll set your LOD to 200 and object level of detail to 200 youll get horrible CPU limited stutters.

I can with render scaling 200 make the FPS plunge with a lot of stutter which make sense as it draw at much higher resolution. Or marking CPU bottleneck with low render scaling.

But Terrain LOD between 10 (41 FPS) and 200 (34 FPS) do not change the GPU bottleneck and do not induce stutters. It still limited by GPU as with terrain LOD 100. So resolution or render scaling is much more drastic in shifting the bottleneck from GPU to CPU than LOD.

some more details: Circling Over Billy Bishop Toronto, King Air. Cloudy weather.

terrain LOD 200 : 34 FPS, Mainthread 19 ms, GPU 25 ms (GPU limited).

terrain LOD 100 : 40 FPS, Mainthread 15 ms, GPU 24 ms (GPU limited)

terrain LOD 10 : 41 FPS, Mainthread 10 ms, GPU 22 ms (GPU limited)

We see that GPU rendering time does not vary much while CPU diminish drastically by 50% between 200 and 10.

Object LOD at 200 gives me a tie between CPU and GPU bottleneck with bout at 20 ms about. Occasional stutter at 200.