Huge FPS drop in 2.0 when Mig-21 are close to each other

We've been experiencing this too since the latest 1.5.7 update. Before that it was fine. Huge drop to almost single digits when migs are right next to each other. But once one taxies just a bit further past its fine again.

Very strange. Its almost like its got only got something to do with them being on each others left or right.

I confirm the problem persists.

Happened to me & wingman on blue flag server when lining up on the runway very close to each other.

Cheers

Yep.. again right now.

Only 2 mig-21 on airfield. MP. MASSIVE FPS lag ONLY when to left or right of another Mig. Close. At about 2 jets width it seems fine.

Also had a huge server crash when we fired missiles at a bomber formation... but that may be unrelated.

The reason of the fps drop is located in the collision model, so Magnitude please fix it!

I tested it and when i renamed the mig-21-collision.edm to mig-21-collision.edm.bak, the problem was disappeared. But this method is not solve the problem, because in that case you can't start from the ground and of course you haven't collision model... :D

Nice find!

yes please fix... note this is also happening in 1.5 (even though the thread title was for 2.0)

Planes grounded

Couple of us wanted to look into flying the Mig21 as a formation team. So last night on the AO 1.5x we tried flying close formation. Most of us fly using VR. This problem cropped up as soon as we get close (a few meters) - frame rates drop to below 15's in VIVE and Oculus. So basically unflyable in formation. Its a great pity though as this would be a great addition to the formation flying fraternity which is gaining momentum. But until this is solved the planes are grounded :(

The reason of the fps drop is located in the collision model, so Magnitude please fix it!

 

I tested it and when i renamed the mig-21-collision.edm to mig-21-collision.edm.bak, the problem was disappeared. But this method is not solve the problem, because in that case you can't start from the ground and of course you haven't collision model... :D

Interesting observation. I'd like others to try this method and report back.:thumbup:

No word on this? Its a pretty critical bug. No indication of work on bug tracker either.

no signals of life at all...

This issue is still here.

Just verified 2 days ago on blueflag Nevada

same problem in version 1.5,

two mig´s on taxi close by each other is a single frame show.

Latest 1.5 change log:

DCS MiG-21Bis by Magnitude 3 LLC

• Remodeled collision model.
  
• Fixed minor visibility arguments for pylon and gear door damage.
  
• Fixed critical damage flight controls for missing wings.
  
• Fixed rudder key bindings.
  
• Removed country list from ‘Am’ file
  

We flew on thursday 2.2 Nevada BlueFlag two-ship MiG-21. (We stream every tuesday and thursday ... ) and we noticed there not a single framedrop when one passed the other on the runway. It seems like its gone there already. We will make additional tests next week.

I just experienced the problem on 1.5.8 ACG again.

Remove the damage model...does it still happen?

Yep... we tested the other night... problem persists in 1.5.8.

Must be programming then. :/

+1 on Kutaisi when taxiing, just before runway ... Same pb in 1.5.8

I've logged a track a while ago. The track is now getting some attention. However seems they can replicate the issue but for multiplayer is seems they are struggling to figure out what is causing this.

Also seems only two people have logged this as an issue. Please head over to their website and log this. The more people do the more critical this is and then gets attention. Don't vent on the DCS forum as I don't think they necessarily use the forum to be notified about bugs.

Log issues here : https://leatherneck-sim.mantishub.io/

If you guys log it, please dont submit another ticket. Just add a note on an open ticket.

Gents,

Here are 2 test files to check for FPS drop. Simply backup the originals and drop these into the Shapes folder.

2 x 8K textures are removed from the model.

MiG-21Bis_FPS-Drop-Test-Files.rar

Hi. We tried the file on a multiplayer server, using similar conditions

reported initially. Files were copied both to client PC's as well as a

scenario copying the files to the host server.

Problem remains unfortunately. No apparent improvement at all.

Thank you for testing. Give this collision file a try. I had an increase of 50fps in Single player, no AI.

mig-21-collision.rar

Hi Rudel

Nice improvement with the new collision file. For me no FPS drop close to other Mig-21. Not a single FPS.