Whiskeybravo Posted May 23, 2020 Posted May 23, 2020 I know this has been raised before but I still can't get my head around the fact that mirroring the VR image onto my monitor has little impact on performance? Surely the fact that my monitor is running with its desktop, other app windows (eg Voiceattack) and mirroring the VR display must mean that it is sucking valuable resources from the CPU/GPU? I don't think I'm stupid but I'm willing to accept that it might just be magic that my poor 53 year old brain can't comprehend! :) Any tech gurus care to explain in simple terms? Cheers, WB.
Taz1004 Posted May 23, 2020 Posted May 23, 2020 (edited) It does not. Your CPU/GPU spends most of its cycles calculating the visuals. Mirroring what's on your HMD to your monitor does not take any or very miniscule resources. In simple terms, yes you may think that they're actually drawing more pixels so it would hurt the performance but the reason why higher resolution hurts FPS is because your graphic card has to calculate more details at higher resolution. Actually drawing the pixels doesn't take any resource. Think of it this way, if you set your resolution to really low, like 720x480, and then blow it up full screen to your 4K display, your graphic card only spent it's resources calculating the low resolution and doesn't take any resources "Just drawing" the pixels to fill the 4K display. If you want, and if you have, try connecting your monitor to your motherboard display port and only your HMD to your graphic card. Depending on your motherboard, you may or may not have to activate motherboard display through BIOS. Edited May 23, 2020 by Taz1004 Better Smoke - Better Trees Caucasus - Better Trees Syria - Better Trees Mariana - Clear Canopy Glass
MPK Posted May 23, 2020 Posted May 23, 2020 I thought the same thing when I first got into VR. After several experiments involving unplugging monitors and so on, I have concluded that it has no negative impact at all.
dburne Posted May 23, 2020 Posted May 23, 2020 Correct it does not, just a mirror image displayed - no extra processing required. Don B EVGA Z390 Dark MB | i9 9900k CPU @ 5.1 GHz | Gigabyte 4090 OC | 64 GB Corsair Vengeance 3200 MHz CL16 | Corsair H150i Pro Cooler |Virpil CM3 Stick w/ Alpha Prime Grip 200mm ext| Virpil CM3 Throttle | VPC Rotor TCS Base w/ Alpha-L Grip| Point Control V2|Varjo Aero|
speed-of-heat Posted May 24, 2020 Posted May 24, 2020 nope it makes no functional difference SYSTEM SPECS: Hardware AMD 9800X3D, 64Gb RAM, 4090 FE, Virpil T50CM3 Throttle, WinWIng Orion 2 & F-16EX + MFG Crosswinds V2, Varjo Aero SOFTWARE: Microsoft Windows 11, VoiceAttack & VAICOM PRO YOUTUBE CHANNEL: @speed-of-heat
Whiskeybravo Posted May 25, 2020 Author Posted May 25, 2020 Thanks for all the replies, guess I'll just have to get used to not understanding it! :) WB.
dburne Posted May 25, 2020 Posted May 25, 2020 Think of it like seeing an image of your TV in a mirror. The TV is not doing any extra work to get that image to the mirror. 1 Don B EVGA Z390 Dark MB | i9 9900k CPU @ 5.1 GHz | Gigabyte 4090 OC | 64 GB Corsair Vengeance 3200 MHz CL16 | Corsair H150i Pro Cooler |Virpil CM3 Stick w/ Alpha Prime Grip 200mm ext| Virpil CM3 Throttle | VPC Rotor TCS Base w/ Alpha-L Grip| Point Control V2|Varjo Aero|
Motomouse Posted May 25, 2020 Posted May 25, 2020 Picture is only rendered once (this is the arduous part). Then it is shown on two devices (this much less arduous even if some scaling is involved). VIC-20@1.108 MHz, onboard GPU, 5KB RAM, μυωπία goggles, Competition Pro HOTAS
Steel Jaw Posted December 16, 2022 Posted December 16, 2022 I run a 3 monitor setup, would removing 2 of those monitors increase VR performance? "You see, IronHand is my thing" My specs: W10 Pro, I5/11600K o/c to 4800 @1.32v, 64 GB 3200 XML RAM, Red Dragon 7800XT/16GB.
Mars Exulte Posted December 16, 2022 Posted December 16, 2022 (edited) 8 hours ago, Steel Jaw said: I run a 3 monitor setup, would removing 2 of those monitors increase VR performance? No. The monitors are not involved in the rendering process. All the work is being done behind the scenes. By the time it gets to your display it's all already been done. That's why you can up/downscale resolution to a given screen. You're telling it how many pixels to calculate, not how many you'll actually display. Basically, by this stage, any ''workload'' is on the monitor, not your GPU. The GPU already did its thing, now it's just passing out the results to whoever wants it. Same as solving a math equation and then giving the answer to your classmates. The calculations were already done and are still valid no matter how many people have them, they don't have to redo or check your work. They just hold it up. Edited December 16, 2022 by Mars Exulte 1 Де вороги, знайдуться козаки їх перемогти. 5800x3d * 3090 * 64gb * Reverb G2
WipeUout Posted December 16, 2022 Posted December 16, 2022 (edited) Actually, generating a mirror image seems to have some cost. Not a lot but still there is a cost because your HMD image resolution is not the same as your monitor or the mirror. And if the system had to manipulate/resize/crop the image, then there are resources required to do that but not necessarily the GPU, the CPU is also involved. To know what impact it has is very difficult. I experimented with desktop resolution from 800x600 to 4k and switching VR option "Mirror: Use system Resolution" on and off and noticed very slim differences inside the margin of error so difficult to draw any conclusion. If we had the option to turn the mirror on/off, we might see a difference in performance or not but definitely we would have the facts to correctly answer the question. Edited December 16, 2022 by WipeUout 1 ------------------------------------------------------------------------------------------------------------------------------------------------------------ 9800X3D, RTX 4090, 96GB DDR 5, MSI Tomahawk 870E, Crucial 2TB x 2, TM WARTHOG COMBO + PENDULAR RUDDER PEDALS, THE AMAZING PIMAX 8K X, Sony 5.1 Spks+SubW | DCS, A-10C_II, AH-64D, F-14/15E/16/18, F-86F, AV-8B, M-2000C, SA342, Huey, Spitfire, FC3.
freehand Posted December 16, 2022 Posted December 16, 2022 (edited) Every thing cost something. And when you have lots of the little things it becomes a big thing. Most peoples rigs are bloated with little things. Edited December 16, 2022 by freehand 1
dburne Posted December 16, 2022 Posted December 16, 2022 Lol I got my first VR Headset in Jan 2017. This question was asked over and over even then. And here we are some almost 6 years later still asking the same question. Don B EVGA Z390 Dark MB | i9 9900k CPU @ 5.1 GHz | Gigabyte 4090 OC | 64 GB Corsair Vengeance 3200 MHz CL16 | Corsair H150i Pro Cooler |Virpil CM3 Stick w/ Alpha Prime Grip 200mm ext| Virpil CM3 Throttle | VPC Rotor TCS Base w/ Alpha-L Grip| Point Control V2|Varjo Aero|
freehand Posted December 16, 2022 Posted December 16, 2022 (edited) I thought this was referring to multiple monitor setups when I run monitors many years ago there was a performance hit. Any how my answer holds true on the little things in VR even tho I was totally off topic lol. Edited December 16, 2022 by freehand
Dickie Posted December 17, 2022 Posted December 17, 2022 Monitor resolution does cost you performance
Slammin Posted December 20, 2022 Posted December 20, 2022 RT2060 - VR 8GB. I want to kinda say more...... Abit IN9 32x MAX- Kentsfield QX6700 @3520 1.5 vcore watercooled D-Tek Fuzion/PA-160/MCR120/2x MCP655 2x2GB G-Skill 1066 5-5-5-15 2T@1.9vdimm 2x EVGA 580GTX 1.5GB SLI 2x 74GB Sata Raptor Raid0 2x 320GB Hitachi Sata II X-FI Elite Pro Dell U3011 Lian Li V2100B Corsair HX1000
RoboHackfeld Posted December 20, 2022 Posted December 20, 2022 (edited) Am 17.12.2022 um 11:21 schrieb Dickie: Monitor resolution does cost you performance Yes it does but only on low end Systems that can't handle many tasks beside DCS(VR) its significant. Edited December 20, 2022 by RoboHackfeld MSI Gaming Plus Max X470, Ryzen 7 5800x3d, 5080, 4*16GB DDR4 3200, Samsung 1TB M2 SSD. Quest 2
ShuRugal Posted February 25, 2024 Posted February 25, 2024 On 12/19/2022 at 11:22 PM, Slammin said: RT2060 - VR 8GB. I want to kinda say more...... This community has had a serious issue with gatekeeping around hardware for as long as I have been a part of it. Really needs an attitude shift. Insisting that people NEED to buy the latest and greatest bleeding-edge kit to get the minimum level of usable performance out of the game is harmful to the community, not helpful. All it succeeds in doing is driving people away who cannot get the top-end hardware. 1
nikoel Posted February 27, 2024 Posted February 27, 2024 On 2/26/2024 at 4:04 AM, ShuRugal said: This community has had a serious issue with gatekeeping around hardware for as long as I have been a part of it. Really needs an attitude shift. Insisting that people NEED to buy the latest and greatest bleeding-edge kit to get the minimum level of usable performance out of the game is harmful to the community, not helpful. All it succeeds in doing is driving people away who cannot get the top-end hardware. Holy thread resurrection batman! Anyway, when I was rocking a GTX 1060Ti I was glad that someone told me with no uncertain terms that I should not spend any money on VR until I got a better PC I'm glad to have received this advice at the time Unfortunately there are gates. But those gates are the hard realities of DCS VR resource requirements - rather than the community it self. Telling a 2060 user that they should go full steam ahead is akin telling a cripple that he can run a marathon. I am sure we will find a guy on crutches there somewhere, but the vast majority will be setting themselves up for failure I agree one no longer needs the best hardware out there to run VR. A 4070 will do the job nicely for instance. But a 2060...?! This aint it chief 1
ShuRugal Posted February 28, 2024 Posted February 28, 2024 On 2/27/2024 at 1:58 AM, nikoel said: Holy thread resurrection batman! Anyway, when I was rocking a GTX 1060Ti I was glad that someone told me with no uncertain terms that I should not spend any money on VR until I got a better PC I'm glad to have received this advice at the time Unfortunately there are gates. But those gates are the hard realities of DCS VR resource requirements - rather than the community it self. Telling a 2060 user that they should go full steam ahead is akin telling a cripple that he can run a marathon. I am sure we will find a guy on crutches there somewhere, but the vast majority will be setting themselves up for failure I agree one no longer needs the best hardware out there to run VR. A 4070 will do the job nicely for instance. But a 2060...?! This aint it chief lol, i didn't even notice the age of the thread. For some reason, the forums notification function put this thread in front of me, and i lizard-brain responded without reading date stamps. As far as hardware to run the game.... I was running DCS in VR on a GTX-1070 all the way up until late 2021. I had to tune the hell out of it, but i was getting 40+ FPS reliably in helicopter mode, and 50+ in the mile-high club. Currently running a 3070, eyeballing a 4070 because 8GB of VRAM is starting to be an issue in terms of <profanity> just soaking up RAM for no reason (looking at you, VR Chat)
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