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

[agentkgb]

Hi,

 

As the title says, tested on the ground and in the air. If two Mig-21 planes are in a close proximity (within around 10 meters or closer), the fps drops a huge amount. With my specs (i5-3550/16GB/NV970) the fps drops from a stable 80-110 to 5-10 fps. As the two planes are moving away and the distance increases the fps comes back.

 

Thanks,

 

- KGB -

[Tarres]

Same here.

 

5 mig-21 in ramp at Groom Lake. FPS drops to 5-7. FPS at their normal values (60 locked) when distance augment to +100 meters (maybe middle distance LOD?)

[sunski34]

same for me

 

Yes, same problem when 2 mig 21b closed to each other...

[Joe Kurr]

Same problem here, albeit a bit more extreme.

With two MiG-21s sitting on the tarmac at Nellis, I went from 40 FPS to roughly 40 SPF (Seconds Per Frame).

When the other MiG-21 despawned (player chose another aircraft) the frame rate slowly went up again, and after a minute or two was back to 40 FPS.

[Art-J]

This one is going to be difficult to replicate and investigate I think. I just did a few test flights - two MiGs (me and AI), generic Polish AF skins, air start 5000 m over southern part of the map, a couple of km away. With icons on (for distance measurement) and off, model enlargement to "medium" and off I was closing in on my wingman, down to single digit numbers, monitoring fps all the time. Never got below 50-few.

 

My specs are: i5 4670 OC'ed do 4.2, a single GTX780 (359.00 drivers), 8 gigs of RAM, Win 7x64. In-game gfx settings mostly on high with object shadows on medium, terrain shadows flat and somewhat medium preload radius, trees and clutter.

 

Edit: my mission below. Try it out and see what performance you get on Your PC. Also, why not posting your missions, so I can test it on my PC.

MiGx2.miz

Edited December 29, 2015 by Art-J
Adding attachment.

[SgtWorm]

This one is going to be difficult to replicate and investigate I think. I just did a few test flights - two MiGs (me and AI), generic Polish AF skins, air start 5000 m over southern part of the map, a couple of km away. With icons on (for distance measurement) and off, model enlargement to "medium" and off I was closing in on my wingman, down to single digit numbers, monitoring fps all the time. Never got below 50-few.

 

My specs are: i5 4670 OC'ed do 4.2, a single GTX780 (359.00 drivers), 8 gigs of RAM, Win 7x64. In-game gfx settings mostly on high with object shadows on medium, terrain shadows flat and somewhat medium preload radius, trees and clutter.

 

Edit: my mission below. Try it out and see what performance you get on Your PC. Also, why not posting your missions, so I can test it on my PC.

 

Did you try you and a friend in multiplayer? I found it always happens then but could not replicate with with AI. Is it trying to render the other cockpit in multi?

 

I flew with a mate for a couple of hours last night happened all the time. So we just stayed 2 plane lengths away from each other on the ground and all was fine. If we came any closer massive fps drop as others observe.

[Art-J]

Cannot confirm, as I'm offline player only. Looks like it's online-related problem then.

[grunf]

I don't have such drastic performance drop, but flying close formation with the AI MiG causes the FPS to drop from solid 60 (enforced by vsync) to 30-40. i5 4460, GTX970, 16GB, SSD

[Derbysieger]

Same Problem here. I get a slideshow in 2.0.1 if there is another MiG-21Bis in close proximity to me.

[Hook47]

You got to be kidding me.... well this is wonderful....

[upupandaway]

Can confirm this problem for MP. As soon as a MiG-21 spawned next to me on the server, I went from stable FPS to a still image and DCS crashed yout 30sec later.

[Esac_mirmidon]

Its present both on SP and MP.

 

Massive frame drop in DCS 2.0.1 with more than one Mig-21. In my case from 60 FPS to 25 with only one Mig-21 by my side. In the initial DCS 2.0 Nevada release this drop never existed.

Edited February 7, 2016 by Esac_mirmidon

[Tarres]

Reported in the bugtracker.

 

https://leatherneck-sim.mantishub.com/m/issue_page.php?id=35

 

It seems that it is not possible to fix it. They recommend lower the graphical settings

[Esac_mirmidon]

Weird.

 

This is only related to the Mig-21. And only with recent updates. With the initial Nevada version no drop at all. With any other plane i dont have such massive frame drop.

 

And i´m trying with shadows OFF and flat shadows on. Same drop.

 

The most strange thing is that the drop isn´t related to looking directly at the Fishbed, is like a bubble effect all around. You can look at the opposite direction and the drop is still there.

Edited February 7, 2016 by Esac_mirmidon

[Hook47]

Reported in the bugtracker.

 

https://leatherneck-sim.mantishub.com/m/issue_page.php?id=35

 

It seems that it is not possible to fix it. They recommend lower the graphical settings

 

WHAT? :doh:

 

If it isn't possible to fix it, how have I not had the issue in prior versions?

 

LNS please be Jonny on the spot with getting this corrected. I can live with waiting years for the SPS 141 to get fixed I guess, but this is going to make it impossible for myself and friends to fly this plane together and probably get it yanked from servers (again)

Edited February 7, 2016 by Hook47

[Cobra847]

WHAT? :doh:

 

If it isn't possible to fix it, how have I not had the issue in prior versions?

 

LNS please be Jonny on the spot with getting this corrected. I can live with waiting years for the SPS 141 to get fixed I guess, but this is going to make it impossible for myself and friends to fly this plane together and probably get it yanked from servers (again)

 

 

Right now the cause is unknown.

 

We will know more with time.

Edited February 7, 2016 by Cobra847

[Cobra847]

Weird.

 

This is only related to the Mig-21. And only with recent updates. With the initial Nevada version no drop at all. With any other plane i dont have such massive frame drop.

 

And i´m trying with shadows OFF and flat shadows on. Same drop.

 

The most strange thing is that the drop isn´t related to looking directly at the Fishbed, is like a bubble effect all around. You can look at the opposite direction and the drop is still there.

 

Thanks for the detail.

[Esac_mirmidon]

Your welcome Cobra.

 

Thanks for taking time with this issue.

[Hook47]

Right now the cause is unknown.

 

We will know more with time.

 

I figured that must be the case, the other guys remark about it "not bring fixable" had me reeling...

 

Thanks

[Pikey]

+1 found it. Very odd.

[Esac_mirmidon]

It seems now with the latest 2.0.1 update the issue is less dramatic.

 

Before i went from 60 playing alone to 30 FPS with other Mig-21 next to me. Now i´m around 45 when another near me and when he moves around 50 meters ahead i recover my 60 solid FPS.

 

Taking in count that in 1.5.3 i have around 50 with another Mig-21 next to me it´s almost the same right now except that in 1.5.3 i have FPS drop ONLY when i´m looking at the other MIg-21.

 

In 2.0.1 the drop is all around, no matter where i´m looking.

[Para_Bellum]

We just did a training flight and, having not flown the Mig-21 on the NTTR map for some time, encountered this problem for the 1st time: in cockpit view in a single Mig: 80 FPS. Another player joins in a Mig next to mine, FPS drop to 20s, for him even lower (single digits).

 

Win10, core i5 2500k@4GHz, 16 Gig RAM, GTX 760

[vitabutch]

WHAT? :doh:

 

If it isn't possible to fix it, how have I not had the issue in prior versions?

 

It has been with Mig for ages. When Migs are close to each other you will get a massive fps drop.

[Esac_mirmidon]

It´s fixed for me in the last 2.0 update.

[Juuba]

It happens to us in the current update, in Vegas.

 

Not so much in Caucasus.

Edited June 19, 2017 by Juuba