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What should my CPU vs GPU loads be?

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Whatever you want it to be.

Running i5-9600K @ 4.8ghz - 32GB DDR4 3200mhz - GTX 3070.

I was having a quick flight yesterday evening, so about 13hrs ago and the performance was terrible for me, I was struggling to get 30 fps at times at Pilot Plus EGGD - frames came back a little after take off.

 

I'm 100% certain a lot of the performance issues since launch have been Server related. 

New PC Ryzen 9850X3D - 32gb ddr5 6000Mhz - MSI MAG B850 Tomahawk wifi - Gigabyte wind force gaming OC 5090 - 2TB Sabrent NVMe. Old PC - Ryzen 5900x - 32gb 3600Mhz RAM - Asus Strix X570-F Motherboard - ASUS TUF OC RTX 3090 - 1TB Sabrent NVMe. AOC AGON 32" 144Hz - Honeycomb Yoke - Thrustmaster HOTAS Warthog. T Flight Rudder Pedals - Trackir.

4 hours ago, hanhamreds said:

I was having a quick flight yesterday evening, so about 13hrs ago and the performance was terrible for me, I was struggling to get 30 fps at times at Pilot Plus EGGD - frames came back a little after take off.

 

I'm 100% certain a lot of the performance issues since launch have been Server related. 

Folks should really only test and evaluate performance with no live weather (pick a preset like clear sky), no AI traffic, no scenery mods, and cache turned on, and having conducted a flight in that area already to cache the terrain data… in the same plane. Otherwise, all these various factors could absolutely be impacting your performance making comparisons between today and yesterday, or this release and that release, or this hardware and that hardware, completely useless. 

3 hours ago, Virtual-Chris said:

Folks should really only test and evaluate performance with no live weather (pick a preset like clear sky), no AI traffic, no scenery mods, and cache turned on, and having conducted a flight in that area already to cache the terrain data… in the same plane. Otherwise, all these various factors could absolutely be impacting your performance making comparisons between today and yesterday, or this release and that release, or this hardware and that hardware, completely useless. 

You only have to compare with a discovery flight to see the difference- it’s not a big secret

New PC Ryzen 9850X3D - 32gb ddr5 6000Mhz - MSI MAG B850 Tomahawk wifi - Gigabyte wind force gaming OC 5090 - 2TB Sabrent NVMe. Old PC - Ryzen 5900x - 32gb 3600Mhz RAM - Asus Strix X570-F Motherboard - ASUS TUF OC RTX 3090 - 1TB Sabrent NVMe. AOC AGON 32" 144Hz - Honeycomb Yoke - Thrustmaster HOTAS Warthog. T Flight Rudder Pedals - Trackir.

On 8/15/2022 at 3:08 PM, avi8tir said:

I was just looking at some things.... was on approach into KORD recently and the textures had not fully rendered even on short final. Had me question what was going on. 

I looked through the nvidia overlay and CPU usage was about 20% whereas GPU was 80%-90%. 

What should this be normally?

i9-12900k / RTX 3080ti

I find that the key to smoothness is at whatever frame rate you choose to run at make sure that in the developer fps window your GPU timing is always higher than your main thread timing (always GPU limited). If your constantly main thread limited you have a much higher chance of stutters. I have found that with my PC running high to ultra settings at 60 fps in the PMDG 737 my CPU will only show average use of 25% - 35% and my 3090 will be around 75% - 80%

In the Fenix A320 however  I tend to lock at 30fps but every setting is maxed out and I even push the render display to 130 to keep the load on the GPU higher (around 30ms) but it’s very fluid and smooth even though it’s only 30 fps

 

Richard

i7-12700K | Noctua NH-D15S Black Version | MSI Pro Z690 - A | 32 GB DDR4 3600 | Gigabyte Gaming OC 4090 | 1TB WD Blue NMVe (MSFS 2020) | 500 GB WD Black Gen 4 NVMe | 4TB WD Black Conventional | Fractal Design Torrent Case | Seasonic 1000W Gold Plus PSU | Thrustmaster Boeing Yoke | Honeycomb Throttle | Airbus Side Stick | Virpil Rudder Pedals | Sony X90K 55 Inch TV |

mmBbmS1.png

 

Agreed, a slight preference towards GPU or just balanced with neither GPU or CPU waiting excessively long for the other, seems optimal.

If your limited by main thread increase GPU hungry options. If your limited by GPU increase settings that rely on CPU.

5 hours ago, Glenn Fitzpatrick said:

Agreed, a slight preference towards GPU or just balanced with neither GPU or CPU waiting excessively long for the other, seems optimal.

If your limited by main thread increase GPU hungry options. If your limited by GPU increase settings that rely on CPU.

Is there a breakdown somewhere of which settings hammer the CPU vs GPU?

 

Intel Core i7 8700k clocked to 4.6GHz, GTX1080Ti, 32GB DDR4 RAM, MSFS installed on NVMe drive, Windows 11, Dell 27" 60Hz Monitor + Dell 24" 60Hz Monitor. Resolution 1920x1080. Game Mode on, GPU scheduling enabled (Win11). MSFS settings: High-End for airlines, Ultra for GA.

For CPU the Terrain and Object LODs are a big hit,

For GPU the Render Scaling is the biggest.

This is an older thread that goes through every setting in detail but it has not been updated since SU5 and we are currently on SU9 .  Most things will not have changed much.

https://forums.flightsimulator.com/t/how-to-graphics-settings-and-performance-guide-su5-complete-retest-8-2-2021/132407/1

Edited by Glenn Fitzpatrick

Photogrammetry always makes my CPU the bottleneck. 

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