Big FPS drop when switching from one aircraft to another using a 3080TI video card

[Honez]

Hi guys, I recently did a big upgrade on my video card going from a 2080TI to a 3080TI. Here's what I am running into. First off I only play in VR. I have the latest HP-Reverb 2 with the latest firmware. All my HW is under 1 yr old and I run all the latest Nvidia drivers. 

 

95% of the time when I first get in a mission either MP or SP makes no difference. I am getting 50+ FPS. If I jump from one aircraft slot to another the FPS can drop as low at 15 to 20. This also can happen when I launch a mission from the editor and then go back to the main menu and then back to into a mission the FPS often drops to 15 to 20. The only way I have been able to get it back up to normal is by opening "Task Manager" and then close it. This action somehow often bring my FPS performance back to 50+, not not every time. Sometimes it can take a few times of doing that.

 

So here is what I have done so far. I have the luxury of being able to test several video cards. A 3070TI, 1080TI, 2080TI, and 3080TI. What I have gathered so far is that it is only happening on 3000 series cards. I have validated this through hours of swapping out of cards and going in and out of the game. What has become clear is that it never happens on a 1000 or 2000 series card. It does however happen consistently on the two different 3000 series cards I have tired, both from different manufactures. MSI 3070 TI and the ZoTAC 3080TI.

 

Can someone from the technical side of the DCS's house confirm what I am seeing and tell me it's being addressed? I can't be the only one seeing this. I have absolutely validated this issue with 4 different Nvidia video cards from each generation of card. 1080 TI and 2080 TI no issues, the FPS stays high no matter what I do. The 3070TI and 3080TI both suffer from this drop in FPS. 

 

Here are my HW Specs: 
Processor    Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz   3.60 GHz
Installed RAM    32.0 GB
System type    64-bit operating system, x64-based processor
 

Edition    Windows 10 Pro
Version    21H1
Installed on    ‎6/‎20/‎2021
OS build    19043.1165
Experience    Windows Feature Experience Pack 120.2212.3530.0
 

[=OPS=Slider]

Exactly the same thing happens to me with my 3070 Ti. I said about it in another thread. I can take a plane, switch to another plane and the performance is gone.

[Snowblind]

same on a 3090, and when changing loadouts tbh

[FoxxyTrotty]

I'll add as a long term (5 years) VR user in DCS, this has always been an issue. Its not EVERY aircraft swap, but certainly going in and out of the datalink type ones doesn't seem to help much.

The VR frame rate issue (been in forums for years) was described years ago, as i experience, that over time / aircraft swaps, degrades, an on occasion, massively like you describe, cut in half - to resolve this, alt-tabbing out of the game, to ANY other window, for example spotify, click on the window and just do a simple action, i just resize it by any given amount - alttab back into DCS and fps issue is fixed... its done this for years. not sure how or why, when the Ctrl + (numpad 1-5) manipulated DCS/VR options on the fly, it was enough to just cycle ASW off and on, and didnt need to tab out...

Anyways, im not adding much other than let you know this is a very long-term issue, and the fix if swapping a/c is a quick alt tab and mess around in another window a few moments and tab back in - beats reloading DCS anyways!