some1 Posted December 12, 2020 Share Posted December 12, 2020 In theory Vsync should not matter in VR because it's disabled there. But in case of DCS, if the option is left enabled in the game settings, then it severely affects frametimes on my system and cause a lot of stutters. This is with Vsync OFF: This is with Vsync ON: You can see a pattern of raising "spikes" in GPU frametimes, that repeats every few seconds. If there's not enough headroom left, it will cause drops below 45 FPS and massive stutter. This only happens for me if Vsync in DCS options is enabled and Vsync in nVidia control panel is left at its default "use the 3D application" setting. If the Vsync is globally forced in nVidia drivers for all games, then the checkbox in DCS does nothing and the performance is fine. So for me all worked nicely until I upgraded graphics card to 3080 and wiped clean GPU drivers, which reset nVidia profile to default setting. Since then I've been wondering why the performance in DCS is so bad despite better hardware. Turns out it wasn't the case of bad drivers or some recent DCS update, but a silly checkbox that shouldn't even affect anything. Hardware: VPForce Rhino, FSSB R3 Ultra, Virpil T-50CM, Hotas Warthog, Winwing F15EX, Slaw Rudder, GVL224 Trio Throttle, Thrustmaster MFDs, Saitek Trim wheel, Trackir 5, Quest Pro Link to comment Share on other sites More sharing options...
ED Team BIGNEWY Posted December 12, 2020 ED Team Share Posted December 12, 2020 Interesting, will ask the team about this, thanks Forum rules - DCS Crashing? Try this first - Cleanup and Repair - Discord BIGNEWY#8703 - Youtube - Patch Status Windows 11, NVIDIA MSI RTX 3090, Intel® i9-10900K 3.70GHz, 5.30GHz Turbo, Corsair Hydro Series H150i Pro, 64GB DDR @3200, ASUS ROG Strix Z490-F Gaming, HP Reverb G2 Link to comment Share on other sites More sharing options...
ED Team BIGNEWY Posted December 14, 2020 ED Team Share Posted December 14, 2020 We will be disabling Vsync while VR is enabled. This will be in a future patch. thanks 1 Forum rules - DCS Crashing? Try this first - Cleanup and Repair - Discord BIGNEWY#8703 - Youtube - Patch Status Windows 11, NVIDIA MSI RTX 3090, Intel® i9-10900K 3.70GHz, 5.30GHz Turbo, Corsair Hydro Series H150i Pro, 64GB DDR @3200, ASUS ROG Strix Z490-F Gaming, HP Reverb G2 Link to comment Share on other sites More sharing options...
VirusAM Posted December 14, 2020 Share Posted December 14, 2020 About this I also found that setting vsync to fast in nvidia control panel helps with VR regardless of the dcs setting R7-5800X3D 64GB RTX-4090 LG-38GN950 Meta Quest 3 VPForce Rhino FFB, Virpil F-14 (VFX) Grip, F-15EX Throttle, MFG Crosswinds v3, Razer Tartarus V2 SpeedMaster Flight Seat, JetSeat Link to comment Share on other sites More sharing options...
Brainless Posted December 14, 2020 Share Posted December 14, 2020 (edited) I can confirm the vsync problem. Even when vsync in DCS is set to off and in Nvidia control panel is forced off, FPS are still limited to 62-63 (2D, lowest settings). When vsync is forced to fast (from the control panel), FPS are 150 constantly. The difference in VR is also huge. Edited December 14, 2020 by Brainless Ryzen 5900X (Water), 64GB DDR4@3600CL16, RTX 3090 (Water), U4021QW, Samsung 980 Pro 2TB, 2x1000GB RAID 1, 2000GB, Thrustmaster Warthog + MFG Crosswind, Reverb G2 V2 Link to comment Share on other sites More sharing options...
Lurker Posted December 16, 2020 Share Posted December 16, 2020 (edited) Can someone please clarify, since it's not that clear from what is written here. For best performance in VR what is the workaround: 1. Uncheck Vsync in Game settings 2. What should the setting in Nvidia Control Panel be set to? Fast, or Use 3d Application Setting? Off? Edited December 16, 2020 by Lurker Specs: Win10, i5-13600KF, 32GB DDR4 RAM 3200XMP, 1 TB M2 NVMe SSD, KFA2 RTX3090, VR G2 Headset, Warthog Throttle+Saitek Pedals+MSFFB2 Joystick. Link to comment Share on other sites More sharing options...
mtd2811 Posted December 17, 2020 Share Posted December 17, 2020 Can someone please clarify, since it's not that clear from what is written here. For best performance in VR what is the workaround: 1. Uncheck Vsync in Game settings 2. What should the setting in Nvidia Control Panel be set to? Fast, or Use 3d Application Setting? Off?You can try different combos and see how it performa with your rig I guess? Should be a couple of combos anywaySent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Splashtrick68 Posted November 24, 2022 Share Posted November 24, 2022 Sorry to dig up an old thread but, is this still an issue? I play in 2d and VR and have had my sync box checked. Link to comment Share on other sites More sharing options...
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