Over the last week I’ve been helping a fellow FS Labs Concorde owner resolve the bad stutters his new powerful computer was experiencing. Despite reducing all Scenery settings to the lowest level they still persisted. He mirrored all my settings too.

By a process of elimination we eventually reached the conclusion that the problem must lie with v5.4 since I didn’t experience these problems on my slightly less powerful machine despite running in 4K and with up to 200 Ai in the sim compared to his 1920*1080 with none.

After he uninstalled v5.4 and installed v5.3HF2 the stutters ceased.

LM have made significant changes to v5.4 involving how AIG Ai flight plans are handled as I was getting long freezes in many different airports all around the world which were only resolved by reverting to v5.3HF2.

Those of you running v5.4 may wish to consider reverting to 5.3HF2 if you’re experiencing noticeable stutters. It’s very odd how performance has been affected by a later version but I’m in no doubt v5.4 does have issues.

That"s interesting. Using 5.4 here with smoothness. Just recently re-installed 5.4 along with 4.5.

It was a test to see how those old flight sims would run. 4.5 was straigthforward. no problem on initial install.

5.4 was different.

I had to tune first the affinity settings for the cpu: i9 14900k, that was easy also. But still had few stutters here and there particularly in panning in/out of the cockpit.

Long story short: my monitor is 240hz tuned it down to 60hz and applied the vsync with no framerate limit and triple buffer.

Smooth ever since, actually re-installed more stuff a/c and scenery.

Cheers,

Pierre

Hasn’t it been determined that 5.4 causes higher CPU usage/ hotter temps than using 5.3 at the same settings?  Thought I read that somewhere on avsim.

 

28 minutes ago, ppo said:

Smooth ever since, actually re-installed more stuff a/c and scenery.

But what aircraft and airport are you using for the test? There’s a big difference between default and complex third party.

No aircraft is more complex than Concorde and perhaps it’s that which is pushing the v5.4 especially hard.

The test he used was departing 27L at Simwings Heathrow in FS Labs Concorde. During and after the takeoff roll it was very easy to see these big brief stutters.

If able, try the same with your most complex aircraft at your most demanding airport. T2G LFPG perhaps.

Just now, okupton said:

Hasn’t it been determined that 5.4 causes higher CPU usage/ hotter temps than using 5.3 at the same settings?  Thought I read that somewhere on avsim.

Quite possibly. Too long since I had v5.4 installed to determine.

Despite LM releasing it as a point release suggesting it was a minor update I’m of the view it was far more than that.

5 hours ago, Ray Proudfoot said:

After he uninstalled v5.4 and installed v5.3HF2 the stutters ceased.

The definitive test is to reinstall 5.4 and see if they come back. Otherwise it may just be the result of a clean install.

Cheers

51 minutes ago, Luke said:

The definitive test is to reinstall 5.4 and see if they come back. Otherwise it may just be the result of a clean install.

Cheers

It’s a brand new PC. The 5.4 install was clean.

Fortunately, 5.4 flies very smoothly for me.  I don't seem to have any stutter issues at all. 

I really believe that P3d runs differently on different computer configurations.  We are very quick to blame the VERSION of software when the problem may be not only in the simmer's hardware OR the way you have your settings in the software.  I've noticed differences in smoothness when using the Nvidia graphic settings and NOT using the Nvidia graphic settings (I don't use the Nvidia settings).  There are so many variables that, guess what? We will never have a specific solution for everyone. 

I keep my Nvidia drivers up to date always, and I delete clouds occasionally, and I delete my P3d config occasionally allowing for the decluttering of my overall configuration.  I do have a very new and very powerful Jetline computer and my P3d 5.4 flights often have frames over 100fps with sliders at max or close to it.  

There are an infinite (almost) number of software/hardware variations that I believe that whatever works for you, you should use.

Agree with you Spilok

Is P3Dv6 any better?  I stopped at v3 since I stopped simming except for brief flights here and there. Seems v4 is the most popular.  

22 minutes ago, spilok said:

Fortunately, 5.4 flies very smoothly for me.  I don't seem to have any stutter issues at all. 

Well Paul that depends how hard you push your system. I’m guessing you don’t have Concorde because if you did that aircraft pushes systems harder than any other I have and that includes PMDG 737 and 777.

Then depart from a complex airport with 200+ Ai aircraft in the bubble to push the system even harder.

I am blaming v5.4 because an identical test with that version compared to v5.3HF2 clearly demonstrated stutters with the former were absent with the latter. All other variables were unchanged.

I don’t make these claims lightly. But when you’ve spent a week helping someone and tried multiple settings including setting all Scenery Objects to their lowest setting and the problem persists it’s clear it’s something in the core of the P3D executable that’s responsible.

The chap in question has a AMD 9950X3D, RAM 32GB, GPU nVidia 5090.

A reminder of another problem with v5.4 with many contributions from some of you.

Approaching two years and no problems as described in that long topic.

v5.4 is fine for most but for some it’s caused problems that have only been resolved by reverting to v5.3HF2.

 

I've been back on a prop liner kick the past weeks, ( been reading a lot of Earnie Gann again) and have been seeing some brief stutters and pauses of maybe two or three seconds. I attributed it to running large areas of photo scenery with scenery sliders far right. This is flying A2A Connie, PMDG DC6 and other A2A GA singles. I keep AI traffic settings low. I think I'll try going back to 5.3HF2 and see what happens. I assume a client only reinstall will suffice?

@Patco Lch, the best way to check for these stutters is watching the ground to your left on a takeoff roll. With Concorde the rotation speed is 170kts so it’s a very good test. Reduce Scenery Object settings to minimum.

Even with slower aircraft it remains a good test.

I’d advise uninstalling Scenery, Content and finally, Client. Then install the 5.3HF2 Client plus Scenery and Content after a reboot.

1 hour ago, TuFun said:

Is P3Dv6 any better?  I stopped at v3 since I stopped simming except for brief flights here and there. Seems v4 is the most popular.  

It has very few compatible scenery packages so I’d avoid it. Stick to v5 which is a huge improvement over v3. 64-bit compared to 32-bit with a 4Gb VAS limit. No limit in v5 and I use up to 23Gb with Concorde.

Post your system specs as v5 is more demanding.