[P3Dv4.3] Huge stuttering when ATC gives an approach

Any issues, problems or troubleshooting topics related to the Prepar3D client application.
User avatar
ErikNL
Posts: 152
Joined: Sat Nov 23, 2013 3:27 pm

[P3Dv4.3] Huge stuttering when ATC gives an approach

Postby ErikNL » Mon Jul 16, 2018 5:42 am

Hi all,

I am experiencing a very tough issue with my AI and default ATC.

System:
Intel i7 4790K @ 4.6 Ghz
16 GB RAM
Geforce 1080ti 11 GB
Windows 10 x64
P3D installed @ Samsung 960 EVO

Sim:
Prepar3Dv4.3
Custom AI:
- I.e. AIG, FAIB, FSP models
- Approx. 1500 flightplans
- 13 GB of AI textures (every texture DDS DXT1; 682kb or DDS DXT5 1.33MB when alpha channel is present)
- ORBX FTX Global
- EditVoicePack
- QW787 and Aerosoft Airbus
- Different payware sceneries

I am doing a flight from EDLW to EDDF with 100% AI. Everything is OK, FPS stable between 30-40 FPS. Using default ATC for guidance and flight planning. When approaching Frankfurt and ATC instructs me for the approach the sim is heavily stuttering (3-4 FPS) for an amount of time. The Aerosoft Airbus requires 18FPS for the FBW system so the plane is going crazy and unflyable. From the FSUIPC log (free version) I see the sim reads approx. 200 aircraft at the time.

Below an image to demonstrate. ATC gives me instructions, sim is falling back to 3 FPS and after that Airbus is shaking:
Image

Only workaround I have found so far:
- Disabling AI entirely (solves the issue)
- Pause when the stutters occur and wait the sim to stabilize

I have spent an entire weekend in looking for solutions like;
- Updating drivers
- Cleaning shaders and config files
- Rule out different sets of AI
- Lowering settings
- Disabling EditVoicePack
- Trying tools that remove certain AI traffic

None of them lead to the desired result.

My question; what is technically happening at the point where the stutters occur? Is it indeed the amount of AI that is being loaded? And most of all what are my options except disabling AI or hit the pause button.

And before concluding to lower the AI setting, in the past (FSX and lower P3D versions) this was working fine. Also a hickup when ATC instructs me but only for a second or so.

Any help is greatly appreciated!

Erik

User avatar
ErikNL
Posts: 152
Joined: Sat Nov 23, 2013 3:27 pm

Re: [P3Dv4.3] Huge stuttering when ATC gives an approach

Postby ErikNL » Mon Jul 16, 2018 8:08 pm

I have tried now with different aircraft and also without ATC and even a flightplan. But still huge stutters when getting near EDDF...

User avatar
ErikNL
Posts: 152
Joined: Sat Nov 23, 2013 3:27 pm

Re: [P3Dv4.3] Huge stuttering when ATC gives an approach

Postby ErikNL » Tue Jul 17, 2018 12:07 pm

Trying a broader test flight, this time from EGLL to EHAM. Also here very heavy stuttering during several phase of the flight. All AI related. If I switch AI off, no issues at all...

User avatar
Poppet
Posts: 2770
Joined: Sat Nov 01, 2014 4:12 pm

Re: [P3Dv4.3] Huge stuttering when ATC gives an approach

Postby Poppet » Tue Jul 17, 2018 10:06 pm

Custom AI:
- I.e. AIG, FAIB, FSP models
- Approx. 1500 flightplans
- 13 GB of AI textures (every texture DDS DXT1; 682kb or DDS DXT5 1.33MB when alpha channel is present)

Hello Erik

If you are using Custom AI you might get a quicker response posting this on the Avsim Forums below

https://www.avsim.com/forums/forum/436- ... r3d-forum/

elmucki
Posts: 130
Joined: Mon May 20, 2013 9:17 pm

Re: [P3Dv4.3] Huge stuttering when ATC gives an approach

Postby elmucki » Wed Jul 18, 2018 12:32 am

For one, 100% AI??? Thats a bit much... most use 50% or less. The amount of work for 100% AI will of course bottleneck your system.

User avatar
ErikNL
Posts: 152
Joined: Sat Nov 23, 2013 3:27 pm

Re: [P3Dv4.3] Huge stuttering when ATC gives an approach

Postby ErikNL » Sat Jul 21, 2018 7:36 pm

I have done some more tests, and even when I only load the Lufthansa flightplan, I get big stutters when approx. 80km out of EDDF due to the loading of the bubble.

Is there anything that can be done about it? Hope for a response of the LM devs here.


Return to “Prepar3D Client Application Questions”

Who is online

Users browsing this forum: Majestic-12 [Bot] and 29 guests