November 18, 20214 yr I was previously getting a smooth 30FPS even with demanding scenery and graphics settings. Now, with DX12 (beta) enabled, I'm getting a choppy 20FPS. I know that Asobo said there wouldn't be any performance improvement with DX12. But they said nothing about serious performance degradation. Also, DX12 appears to provide no benefit whatever to scenery quality. Processor: Intel i9-13900KF 5.8GHz 24-Core, Graphics Processor: Nvidia RTX 4090 24GB GDDR6, System Memory: 64GB High Performance DDR5 SDRAM 5600MHz, Operating System: Windows 11 Home Edition, Motherboard: Gigabyte Z790 Aorus Elite AX, LGA 1700, CPU Cooling: Corsair H100i Elite 240mm Liquid Cooling, RGB and LCD Display, Chassis Fans: Corsair Low Decibel, Addressable RGB Fans, Power Supply: Corsair HX1000i Fully Modular Ultra-Low-Noise Platinum ATX 1000 Watt, Primary Storage: 2TB Samsung Gen 4 NVMe SSD, Secondary Storage: 1TB Samsung Gen 4 NVMe SSD, VR Headset: Meta Quest 2, Primary Display: SONY 4K Bravia 75-inch, 2nd Display: SONY 4K Bravia 43-inch, 3rd Display: Vizio 28-inch, 1920x1080. Controller: Xbox Controller attached to PC via USB.
November 18, 20214 yr Yep, same observation after a short test flight. Pity.... Edited November 18, 20214 yr by Virtpilot Tapani Österberg
November 18, 20214 yr 5 minutes ago, David Mills said: I was previously getting a smooth 30FPS even with demanding scenery and graphics settings. Now, with DX12 (beta) enabled, I'm getting a choppy 20FPS. I know that Asobo said there wouldn't be any performance improvement with DX12. But they said nothing about serious performance degradation. Also, DX12 appears to provide no benefit whatever to scenery quality. Does the (older or newer) spec of your hardware specs factor into this? SAR Pilot. Flight Sim'ing since the beginning.
November 18, 20214 yr Author My card is fully DX12 capable and runs the sim beautifully at 4K when the default DX11 option is re-enabled. I lose about 10FPS when selecting the DX12 beta option. Processor: Intel i9-13900KF 5.8GHz 24-Core, Graphics Processor: Nvidia RTX 4090 24GB GDDR6, System Memory: 64GB High Performance DDR5 SDRAM 5600MHz, Operating System: Windows 11 Home Edition, Motherboard: Gigabyte Z790 Aorus Elite AX, LGA 1700, CPU Cooling: Corsair H100i Elite 240mm Liquid Cooling, RGB and LCD Display, Chassis Fans: Corsair Low Decibel, Addressable RGB Fans, Power Supply: Corsair HX1000i Fully Modular Ultra-Low-Noise Platinum ATX 1000 Watt, Primary Storage: 2TB Samsung Gen 4 NVMe SSD, Secondary Storage: 1TB Samsung Gen 4 NVMe SSD, VR Headset: Meta Quest 2, Primary Display: SONY 4K Bravia 75-inch, 2nd Display: SONY 4K Bravia 43-inch, 3rd Display: Vizio 28-inch, 1920x1080. Controller: Xbox Controller attached to PC via USB.
November 18, 20214 yr Direct X12 immediately cashed my system (froze) when loading the scenario, and I have higher end system? Darryl
November 18, 20214 yr I had at the very least expected it to be comparable to DirectX 11, as they most likely just use all the DX11to12 compatibility layers to start with, they even mentioned a very mild performance increase and smoother frames times, as you see with most basic implementations of the low-level APIs. What I'm seeing is just a fairly big performance decrease and it feels extremely sluggish. Oh well, luckily it can be turned off. [MSI MPG X870E Carbon | 9800X3D (PBO +200Mhz / -20 Offset) | Corsair 64GB DDR5 (Custom Timings) | RTX 4090 Founders Edition (Undervolted) | WD SNX 850X 4TB + 4TB | Antec Flux Pro]
November 18, 20214 yr 4 minutes ago, David Mills said: My card is fully DX12 capable and runs the sim beautifully at 4K when the default DX11 option is re-enabled. I lose about 10FPS when selecting the DX12 beta option. When you turned off DX12, did you go back to at least SU6 performance?
November 18, 20214 yr Author 1 minute ago, Sesquashtoo said: When you turned off DX12, did you go back to at least SU6 performance? On Clear Skies, Yes, I got SU6 performance (with very preliminary testing). However, with significant cloud layers in the sky, I got less than SU6 performance even with DX11. Processor: Intel i9-13900KF 5.8GHz 24-Core, Graphics Processor: Nvidia RTX 4090 24GB GDDR6, System Memory: 64GB High Performance DDR5 SDRAM 5600MHz, Operating System: Windows 11 Home Edition, Motherboard: Gigabyte Z790 Aorus Elite AX, LGA 1700, CPU Cooling: Corsair H100i Elite 240mm Liquid Cooling, RGB and LCD Display, Chassis Fans: Corsair Low Decibel, Addressable RGB Fans, Power Supply: Corsair HX1000i Fully Modular Ultra-Low-Noise Platinum ATX 1000 Watt, Primary Storage: 2TB Samsung Gen 4 NVMe SSD, Secondary Storage: 1TB Samsung Gen 4 NVMe SSD, VR Headset: Meta Quest 2, Primary Display: SONY 4K Bravia 75-inch, 2nd Display: SONY 4K Bravia 43-inch, 3rd Display: Vizio 28-inch, 1920x1080. Controller: Xbox Controller attached to PC via USB.
November 18, 20214 yr Just now, David Mills said: On Clear Skies, Yes, I got SU6 performance (with very preliminary testing). However, with significant cloud layers in the sky, I got less than SU6 performance even with DX11. More involved weather .. more gpu demand... no free lunch. AMD Ryzen 9800X3D/ Asus ROG Strix B650E F Gaming WiFi / Asrock Taichi 9070XT / 32GB G.Skill Trident Z5 Neo DDR5 6000 / 2x ADATA XPG 8200 Pro NVME / Arctic Liquid Freezer II 280 / Seasonic Vertex 1000w PSU / Lian Li LanCool II Mesh Performance / Asus VG34VQL3A / Topping E70 Velvet DAC & L70 Amp /Sennheiser HD660s2 Thrustmaster Boeing Yoke + TCA Sidestick + TFRP Rudders
November 18, 20214 yr Does this help with DX12? https://forums.flightsimulator.com/t/couple-of-dx12-tips/470913/33 David Murden. MSFS • Fenix A320 • PMDG 737 • MG Honda Jet • 414 / TDS 750Xi • FS-ATC Chatter • FlyingIron Spitfire & ME109G • MG Honda Jet • • Fenix A320 Walkthrough PDF • Flightsim.to • DCS • A10c II • F-16c • F/A-18c • F-14 • (Others in hanger) • Supercarrier • Terrains = • Nevada NTTR • Persian Gulf • Syria • Marianas • • [email protected] All Cores HT ON • 32GB DDR4 3200MHz • RTX 3080 • TM Warthog HOTAS • TM TPR • Corsair Virtuoso XT with Dolby Atmos® • Samsung G7 32" 1440p 240Hz • TrackIR 5 & ProClip •
November 18, 20214 yr 5 minutes ago, Sethos said: I had at the very least expected it to be comparable to DirectX 11, as they most likely just use all the DX11to12 compatibility layers to start with, they even mentioned a very mild performance increase and smoother frames times, as you see with most basic implementations of the low-level APIs. What I'm seeing is just a fairly big performance decrease and it feels extremely sluggish. Oh well, luckily it can be turned off. I read a review of the development video last night and am fairly sure MS said some systems could see a 10% reduction in FPS INITIALLY which would in time lead to a 15% Increase. What wast clear was if the anticipated increase would be based on before or after the introduction of DX12. As you say, thankfully it can be turned off. AMD Ryzen 7 5800X on ROG CROSSHAIR VIIl DARK HERO (AM4), Asus ROG Strix GeForce RTX 3080 V2 OC and 32 GB Vengeance Pro Ram 3600MHz. DELL Alienware AW3420DW 3440x1440 and DELL U2414H
November 18, 20214 yr From what I understand, they haven't optimized a single line of code for DX12 yet - and like most of the DX API updates, you typically only see improvements once you take advantage of some of the new features. I recall one of the Asobo team members mentioning that the purpose of including DX12 as an option in SU7 is merely a "hey, does this break things?" exercise that requires a large sample size of hardware (and some preliminary results are - YES! It does break some things). Once that's settled, they'll start pushing code that actually takes advantage of DX12 - and since they now have a baseline, they'll know whether the code is an improvement or not.
November 18, 20214 yr 7 minutes ago, David Mills said: On Clear Skies, Yes, I got SU6 performance (with very preliminary testing). However, with significant cloud layers in the sky, I got less than SU6 performance even with DX11. Oh boy...thanks.....
November 18, 20214 yr Not even sure why people are up in arms .. I do not think this was supposed to be anything more than the bare unoptimized implementation for now. Expectations were told to be set low and the results reflect that. AMD Ryzen 9800X3D/ Asus ROG Strix B650E F Gaming WiFi / Asrock Taichi 9070XT / 32GB G.Skill Trident Z5 Neo DDR5 6000 / 2x ADATA XPG 8200 Pro NVME / Arctic Liquid Freezer II 280 / Seasonic Vertex 1000w PSU / Lian Li LanCool II Mesh Performance / Asus VG34VQL3A / Topping E70 Velvet DAC & L70 Amp /Sennheiser HD660s2 Thrustmaster Boeing Yoke + TCA Sidestick + TFRP Rudders
November 18, 20214 yr I am still updating things. Does DX 12 turn on automatically, I thought it was optional.?
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