Problem: very low FPS with Airubuses

[sp-lcz]

Hi,

I have a huge problem with FPS / frame rate when I use Airbuses (like A320neo, A330 or A340 - form wiki or directly from GitHub - diferent versions). I have 3 to 5 FPS!
But when I use Boeings (733, 738, 752, 763, 772, 787) or ERJ-195, MD-11 or other aircrafts I have over than 30 FPS.

I use FlightGear 2016.4.4 on Windows 10:
Lenovo Y70-70 - laptop
Processor: Intel Core i7-4720HQ (4 rdzenie, od 2.60 GHz do 3.60 GHz, 6 MB cache)
Grafic: NVIDIA GeForce GTX 960M, + Intel HD Graphics 4600
RAM: 8 GB (SO-DIMM DDR3, 1600 MHz)
Screen: 17.3-inch, 1,920 x 1,080 FHD multi-touch screen
HDD: Hybrid 1TB (5400 RPM) plus 8GB SSD

I have the same problem on my MacBook PRO 13”.

I really like Airbuses but it is impossible to fly by them.
Do you have similar problem? Maybe you know, how to resolve it?

Thank you in advance!
Lukasz SP-LCZ

[Thorsten]

If it's aircraft specific, then it's likely aircraft systems/scripting related, so chances are you can't do anything if you don't want to re-write the airplane (you have to find the bottleneck inside the aircraft systems and fix it).

It's possible that there's simply a performance-wasting bug, it's also possible that the systems are simply very complex and cost accordingly, but there's no simple 'fix' you could apply.

[sp-lcz]

I found one solution (by Omega95) for a320neo and it works! I disabled the interior of the aircraft - result = > 30 FPS.

Edited files:
Models/A319neo.xml
Models/A320neo.xml
Models/A321neo.xml

Code: Select all

<!-- model>
      <name>Interior</name>
      <path>Aircraft/A320neo/Models/Interior/a320neo.interior.xml</path>
   </model -->

Maybe somebody know, how to find similar solutions for a330, a340? I check xml files but I can not to find reference to the interior ...

[Thorsten]

I disabled the interior of the aircraft

Probably makes it hard to read the instruments though...

[dutchman]

By disabling the interior you just get rid of the passenger cabin. It's the first thing I do when installing!

Somebody in the past has done a nice job of creating the cabin, but his use of textures was too put it mildly a bit over the top.

[Thorsten]

Well, that doesn't make any sense.

Unless the passenger cabin brings tons of its own Nasal scripts, it's just a textured 3d mesh. At a location which you don't see looking forward out of the cockpit, so it never enters the rendering pipeline because it's culled first, hence it can't drag framerate, so removing it should basically do nothing for your normal view out of the window.