13 minutes ago, Dirk98 said:

Why to run your monitor at 30Hz Ray? The way I've set it here since P3Dv4 in NCP is: 

Because it’s long accepted it produces the smoothest results. The way you've described is a roundabout way of achieving the same result and helpful for those whose monitor cannot run at 30Hz naturally.

1 minute ago, Ray Proudfoot said:

I’m not fixated on the numbers. When I’m at FL290 SE of London enroute to Brussels I wouldn’t expect to see CPU1 hitting 100%. It rarely did in 5.1. I have moderate settings to reflect my 1080Ti. And running AIG Ai also incurs a hit so I’m sensible about settings.

But just a few flights in 5.2 have convinced me more work is being demanded of the CPU and my GPU is definitely under used compared to 5.1. Look at my earlier report where changes in Autogen and Scenery Complexity hardly affected the demand on the GPU.

Its only when the performance isn’t smooth I glance at the RTSS readout and notice CPU1 has hit 100%.

Ray, can you answer without any benchmarks please? Has Prepar3D become more stuttering lower frame rates?

Thanks.

Just now, Dirk98 said:

Ray, can you answer without any benchmarks please? Has Prepar3D become more stuttering lower frame rates?

Thanks.

Yes.

5 minutes ago, Ray Proudfoot said:

Because it’s long accepted it produces the smoothest results. The way you've described is a roundabout way of achieving the same result and helpful for those whose monitor cannot run at 30Hz naturally.

I play some other flightsims on the same rig as well so why switching back and forth when you don't need to? Not so good for your monitor's hardware btw.

Thanks.  

 

Edited June 14, 20214 yr by Dirk98

3 minutes ago, Ray Proudfoot said:

Yes.

Not good.

Just now, Dirk98 said:

I play some other flightsims on the same rig as well so I why switching back and forth when you don't need to? Not so good for your monitor's hardware btw.

Thanks.  

I don’t switch back and forth. The PC is used for flight sim only.

2 minutes ago, Ray Proudfoot said:

I don’t switch back and forth. The PC is used for flight sim only.

Falcon4 BMS is another flightsim as well. It doesn't like 30Hz monitor, if you catch my drift.. I mean I use this monitor for flight sim only like you.

Thanks.

Edited June 14, 20214 yr by Dirk98

@Balint Szarka, what Ai traffic package do you use?

Same issue for me guys.  I was in MSFS land for a while but decided to load up 5.2 just to see what progress is being made.  Liked what I saw visually but then noticed the CPU usage and also saw CPU throttling due to temps - which never happened in MSFS even in Ultra settings. For traffic I use Ultimate Traffic Live 2 btw.

Hoping LM takes a look.

Ilya 

11 minutes ago, Dirk98 said:

Falcon4 BMS is another flightsim as well. It doesn't like 30Hz monitor, if you catch my drift.. I mean I use this monitor for flight sim only like you.

Thanks.

We’re drifting off topic here Dirk. How I achieve 30fps is immaterial to the discussion about increased CPU and decreased GPU usage in 5.2.

There are some 3090 owners who are seeing their cards use no more than 30% of what they’re capable of.

LM have acknowledged there are issues with 5.2 but whether that includes this problem remains to be seen.

20 minutes ago, Ray Proudfoot said:

@Balint Szarka, what Ai traffic package do you use?

AIG

1 hour ago, neilhewitt said:

The key difference, I suspect, is that I don't limit frames. I always run Unlimited. With a hard frame limit then yes, main core usage can drop below 100%, but 95%+ would still be your sweet spot because then you're getting the best CPU performance for the FPS limit you've specified. When Unlimited, the sim is trying to render as many frames as it can regardless of settings, so it'll always be at 100% and it's the FPS that varies. For me, that has been a better trade-off because limiting frames has caused worse performance at given settings for me. Also, I have my CPUs overclocked, core parking disabled, and Windows set to not use SpeedStep, so the cores are always running at the overclock frequency. The shifting of frequencies up and down during turbo operations is, I believe, a cause of microstutters. 

Yes, all these settings are more or less a general consesus among flight simmers since some time. You could also mention some bios settings as Hyperthreading On/Off and AVX ratio offset. I always use HP On with a special AM specific to my system, and my water-cooling allows me not to use AVX offsets (at 5.2Hz OC). One thing that I've noticed: how do you specifically disable core parking? Regedit?

Thanks.

 

8 minutes ago, Ray Proudfoot said:

We’re drifting off topic here Dirk. How I achieve 30fps is immaterial to the discussion about increased CPU and decreased GPU usage in 5.2.

There are some 3090 owners who are seeing their cards use no more than 30% of what they’re capable of.

LM have acknowledged there are issues with 5.2 but whether that includes this problem remains to be seen.

Just because you asked about it in your earlier post here yourself Ray! Was it not for you I wouldn't even remember about that 60/30..

Quote

Ah right. So why not run it at native 30Hz? Is it because of the mouse movement? I've got used to that.

 

32 minutes ago, Dirk98 said:

how do you specifically disable core parking?

I've got ProcessLasso which has a core parking feature, but Bitsum does a separate utility for it also:

ParkControl – Tweak CPU Core Parking and More (bitsum.com)

7 hours ago, Ray Proudfoot said:

You don't say what refresh rate your monitor runs at. Mine is 30Hz. Perhaps that is significant if you're running at 60Hz or forcing 30Hz via other software.

@andy1252, interesting that you have a Ryzen. Maybe that's a factor. Most here are using Intel.

I have two computers with P3d v5.2, and one of those is using a Ryzen processor, which is pretty much maxing out my CPU usage. I forgot to check the CPU usage for the PC using the Intel processor, but I will double check the CPU load on that one later. Anyway, assuming most of you are using an Intel processor, it appears there is no difference in CPU load using either Intel or Ryzen.

Cheers, Pete

Edited June 14, 20214 yr by PilotPete99