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MT: Loading screens missing and bizarre headtracking 'circular vibration' in VR with PiMAX 8kx


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Posted

dcs.log

When the initial loading screen appears (in the hangar) the initial loading screen has multiple overlayed copies, like copies of Agent Smith..  Once in the main menu, a bizarre circular vibration appears in the view, almost like someone glued my eyes so they cannot move, but I have severe Parkinsons.   When loading any SP mission, the loading screens are replaced by a blank screen.  Once in the mission, the circular vibration gets even worse, almost like there's something wrong with the HMD tracking, to the point it is not at all playable.

ST version of DCS functions correctly.

Using OpenXR (latest OpenXR Toolkit) and PiMAXXR (latest), along with latest PiTool/firmware etc

launching DCS.exe from bin-mt folder with options "--force_VR --force_OpenXR".

Is Steam version.

 

System specs:
i9-11900KF OC to 5500Mhz with water block- RTX3080 OC - ASUS ROG HERO VIII - 64GB DDR4 @3600MHz- 1TB SSD OS - 2TB SSD GAME- 1000W PSU
Pimax 8kx - TM Pendular Pedals - TM Warthog Throttle - TM Waterhog HOTAS - TM F/A-18 Grip - WinWing Pheonix MIP/UPC - Homemade Landing Gear control.  Andre's SimShaker driving two subwoofers and seat kickers for seat and control column vibration - sketchpad linked to OpenKneeboard - VoiceAttack with VIACOM Pro

System specs:
i9-11900KF OC to 5500Mhz with water block- MSI RTX4090 OC - ASUS ROG HERO VIII - 64GB DDR4 @3600MHz- 1TB SSD OS - 2TB SSD GAME- 1000W PSU
Pimax 8kx - TM Pendular Pedals - TM Warthog Throttle - TM Waterhog HOTAS - TM F/A-18 Grip - WinWing Pheonix MIP/UPC - Homemade Landing Gear control.  Andre's SimShaker driving two subwoofers and seat kickers for seat and control column vibration - sketchpad linked to OpenKneeboard - VoiceAttack with VIACOM Pro

 

 

Posted

Have you tried importing the new DCS shortcut into your mygames folder in Pitool? This help me. 

  • Like 1

Ryzen 9800X3D, MSI  RTX 4090, 4 TB SSD, 64GB 5200 MHZ DDR5 RAM, MSI 670E Motherboard, Pimax Crystal. Buttkicker Plus, WINWING Rudder Pedals & F16EX Throttle: FSSB-R3-MKII ULTRA Base/TMWH Joystick: DCS: F16C. 

Posted
17 minutes ago, Nuggetz said:

Have you tried importing the new DCS shortcut into your mygames folder in Pitool? This help me. 

Yes - tried that too.  However, the problem isn't with starting up in VR or in OpenXR in MT.  The issues arise once i'm in DCS in MT in VR.

  • Like 1

System specs:
i9-11900KF OC to 5500Mhz with water block- MSI RTX4090 OC - ASUS ROG HERO VIII - 64GB DDR4 @3600MHz- 1TB SSD OS - 2TB SSD GAME- 1000W PSU
Pimax 8kx - TM Pendular Pedals - TM Warthog Throttle - TM Waterhog HOTAS - TM F/A-18 Grip - WinWing Pheonix MIP/UPC - Homemade Landing Gear control.  Andre's SimShaker driving two subwoofers and seat kickers for seat and control column vibration - sketchpad linked to OpenKneeboard - VoiceAttack with VIACOM Pro

 

 

Posted
7 minutes ago, Dave317 said:

It's not just pimax.  I'm using a reverb g1 and the shaking/stuttering is terrible.  Completely unplayable. 

It doesn't happen with the standard Single-Threaded bin\DCS.exe - i've tried clearing shaders, messing with OpenXR Toolkit settings, Pimax Settings, and nothing helps.  I wouldn't even call it micro-stuttering, it's more like gatling-gun stuttering.   I have hyperthreading enabled in bios, but my 11900KF only has 16 threads (2 per core) anyway.

  • Like 1

System specs:
i9-11900KF OC to 5500Mhz with water block- MSI RTX4090 OC - ASUS ROG HERO VIII - 64GB DDR4 @3600MHz- 1TB SSD OS - 2TB SSD GAME- 1000W PSU
Pimax 8kx - TM Pendular Pedals - TM Warthog Throttle - TM Waterhog HOTAS - TM F/A-18 Grip - WinWing Pheonix MIP/UPC - Homemade Landing Gear control.  Andre's SimShaker driving two subwoofers and seat kickers for seat and control column vibration - sketchpad linked to OpenKneeboard - VoiceAttack with VIACOM Pro

 

 

Posted

The issue seem to happen when the multi-threaded system becomes GPU bound.
I have used OpenXR Toolkit to impose an FPS limit of 70 FPS (my PIMAX 8KX is older and only does 75hz)
With that FPS limit setting the menu screen is stable and does not devolve into spinning views. I have loaded in multithread and played singleplayer and connected to two online servers and all was stable

Reporting to ED and continued investigation is needed to find the root cause but that appears to be be a usable workaround at the moment

 

  • Thanks 1
Posted
20 minutes ago, AMBUSH said:

The issue seem to happen when the multi-threaded system becomes GPU bound.
I have used OpenXR Toolkit to impose an FPS limit of 70 FPS (my PIMAX 8KX is older and only does 75hz)
With that FPS limit setting the menu screen is stable and does not devolve into spinning views. I have loaded in multithread and played singleplayer and connected to two online servers and all was stable

Reporting to ED and continued investigation is needed to find the root cause but that appears to be be a usable workaround at the moment

 

Thanks!  I'll give this a go and report back.  I updated the firmware to run the 90Hz native so, following your lead, i'll set a cap at 80Hz in OXR Toolkit and see what happens!

System specs:
i9-11900KF OC to 5500Mhz with water block- MSI RTX4090 OC - ASUS ROG HERO VIII - 64GB DDR4 @3600MHz- 1TB SSD OS - 2TB SSD GAME- 1000W PSU
Pimax 8kx - TM Pendular Pedals - TM Warthog Throttle - TM Waterhog HOTAS - TM F/A-18 Grip - WinWing Pheonix MIP/UPC - Homemade Landing Gear control.  Andre's SimShaker driving two subwoofers and seat kickers for seat and control column vibration - sketchpad linked to OpenKneeboard - VoiceAttack with VIACOM Pro

 

 

Posted

OK.. problem solved!

In PiTool, when you start the bin-mt\dcs.exe with force_VR and force_OpenXR arguments, it creates a new item in your PiTool>Settings>Games>Game List drop-down.

The original "DCS World Steam Edition" is there, but now there's another one, simply called "DCS"  within this settings page, Smart Smoothing was turned on by default, along with "vertical sync" set to 1/2, and Hidden Area Mask Enabled.   TURN ALL OF THOSE OFF!!

I restarted DCS MT, and I now have 59-60Hz at 4K native per eye, with high settings on, and good shadows etc..  i used to get 35-40Hz before.  I am overjoyed!

..oh.. the loading screens are still a buggy nightmare, but now the VR experience in sim is working much better than before!

System specs:
i9-11900KF OC to 5500Mhz with water block- MSI RTX4090 OC - ASUS ROG HERO VIII - 64GB DDR4 @3600MHz- 1TB SSD OS - 2TB SSD GAME- 1000W PSU
Pimax 8kx - TM Pendular Pedals - TM Warthog Throttle - TM Waterhog HOTAS - TM F/A-18 Grip - WinWing Pheonix MIP/UPC - Homemade Landing Gear control.  Andre's SimShaker driving two subwoofers and seat kickers for seat and control column vibration - sketchpad linked to OpenKneeboard - VoiceAttack with VIACOM Pro

 

 

Posted

Similar situation here, 4090, 5800X3D, OpenXR, DCS MT Standalone.

Limiting FPS in OpenXR Toolkit will absolutely stop the 'shakes', but I need to lower it to around 40-50fps (where FPS counter shows CPU bound instead of GPU bound) to reliably stop the glitching. As you bump that number up it gradually gets worse. 

Looks to be a few other threads around MT CPU Bound/Bottlenecking, so hopefully it's on the radar!

Posted

Experiencing the same issue on Pimax 8KX.

My controls & seat

 

Main controls: , BRD-N v4 Flightstick (Kreml C5 controller), TM Warthog Throttle (Kreml F3 controller), BRD-F2 Restyling Bf-109 Pedals w. damper, TrackIR5, Gametrix KW-908 (integrated into RAV4 seat)

Stick grips:

Thrustmaster Warthog

Thrustmaster Cougar (x2)

Thrustmaster F-16 FLCS

BRD KG13

 

Standby controls:

BRD-M2 Mi-8 Pedals (Ruddermaster controller)

BRD-N v3 Flightstick w. exch. grip upgrade (Kreml C5 controller)

Thrustmaster Cougar Throttle

Pilot seat

 

 

  • 1 month later...
Posted

Any news on that issue? Still experiencing those shakes.

My controls & seat

 

Main controls: , BRD-N v4 Flightstick (Kreml C5 controller), TM Warthog Throttle (Kreml F3 controller), BRD-F2 Restyling Bf-109 Pedals w. damper, TrackIR5, Gametrix KW-908 (integrated into RAV4 seat)

Stick grips:

Thrustmaster Warthog

Thrustmaster Cougar (x2)

Thrustmaster F-16 FLCS

BRD KG13

 

Standby controls:

BRD-M2 Mi-8 Pedals (Ruddermaster controller)

BRD-N v3 Flightstick w. exch. grip upgrade (Kreml C5 controller)

Thrustmaster Cougar Throttle

Pilot seat

 

 

Posted

I've found a workaround by enabling the Turbo mode in OpenXR toolkit.

My controls & seat

 

Main controls: , BRD-N v4 Flightstick (Kreml C5 controller), TM Warthog Throttle (Kreml F3 controller), BRD-F2 Restyling Bf-109 Pedals w. damper, TrackIR5, Gametrix KW-908 (integrated into RAV4 seat)

Stick grips:

Thrustmaster Warthog

Thrustmaster Cougar (x2)

Thrustmaster F-16 FLCS

BRD KG13

 

Standby controls:

BRD-M2 Mi-8 Pedals (Ruddermaster controller)

BRD-N v3 Flightstick w. exch. grip upgrade (Kreml C5 controller)

Thrustmaster Cougar Throttle

Pilot seat

 

 

Posted

Same problem here.

Menu shaking, no splash screens, when any mission starts textures are not loaded and take seconds to load. At night when you fly close to cities you can see smooth rays all over the place. Some times also you can see a blue circle arround you. Kind of nightmare. 

Try Turbo mode, limiting fps. On Pitool no smart smoothing, no hidden mask, no "vertical sync".

Posted
Am 10.3.2023 um 20:15 schrieb GayCavalier:

dcs.log 164.17 kB · 10 Downloads

When the initial loading screen appears (in the hangar) the initial loading screen has multiple overlayed copies, like copies of Agent Smith..  Once in the main menu, a bizarre circular vibration appears in the view, almost like someone glued my eyes so they cannot move, but I have severe Parkinsons.   When loading any SP mission, the loading screens are replaced by a blank screen.  Once in the mission, the circular vibration gets even worse, almost like there's something wrong with the HMD tracking, to the point it is not at all playable.

ST version of DCS functions correctly.

Using OpenXR (latest OpenXR Toolkit) and PiMAXXR (latest), along with latest PiTool/firmware etc

launching DCS.exe from bin-mt folder with options "--force_VR --force_OpenXR".

Is Steam version.

 

System specs:
i9-11900KF OC to 5500Mhz with water block- RTX3080 OC - ASUS ROG HERO VIII - 64GB DDR4 @3600MHz- 1TB SSD OS - 2TB SSD GAME- 1000W PSU
Pimax 8kx - TM Pendular Pedals - TM Warthog Throttle - TM Waterhog HOTAS - TM F/A-18 Grip - WinWing Pheonix MIP/UPC - Homemade Landing Gear control.  Andre's SimShaker driving two subwoofers and seat kickers for seat and control column vibration - sketchpad linked to OpenKneeboard - VoiceAttack with VIACOM Pro

its the same for me - Oculus Quest 2 - not playable with MT on

i9-9900K / Bios Profile XMP2 / Rog Strix Z-390F Gaming / ASUS TUF Geforce RTX 4070Ti Super / 32GB HyperX Fury 2666 / Saitek X52 HOTAS / Pico 4

Posted (edited)

Oh yeah thats a very common and normal issue. When loading screens are on, your hardware might be so busy it cant really render the screen at any realistic framerate. Thats not a problem on flat screens, because theres no head movement and its not filling up your entire view. Let alone how ASW/smoothing/reprojection can make it even worse.

But in VR, its extremely irritating and kinda painful, if they are so bright. Gotta close eyes.

 

Would be nice if there was some way to have eye-friendly VR loading screens!

Edited by Temetre
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