sudo nymn

CPU is 7800X3D. That's what I was thinking as well, no need for an extra processing layer. I am at a loss for what to do now. I fully understand that the issue is inconsistent frame pacing. With this hardware I cannot imagine why I am hitting performance bottlenecks that others with similar or less powerful hardware are not. So with the frame pacing as it is there is no way with this panel to use G-Sync without the VRR flickering. I can force G-Sync off and use a fixed refresh rate, but that does not eliminate screen tearing entirely. It's an impossible catch 22.

This is what I get even at FR 30:

So the input lag I was getting was because the native FG somehow wasn't switching off in some cases causing LLS to do its work on top of the sim's FG. Sorted that and while I think this is likely headed in the right direction I'm not super convinced about the results at the moment. @Ianrivaldosmith thanks for the help. Can you confirm a couple things for me: - Is this even necessary with an RTX 4090 (or any 4 series)? LLS tech looks great, but it just doesn't feel right to be adding an external processing layer. - With G-Sync enabled, what is the preferred handler for V-Sync? LLS should be Off (Allow Tearing)? Currently I have: FS2020 = V-Sync OFF NVCP = V-Sync ON LLS = V-Sync OFF - Is there anything I could be missing outside of sim layer tuning (AI traffic, LOD, etc.) to smooth out the frame pacing? With FR 38 + LLS + VRR, it's still too uneven. In high load scenarios it will either spike high and cause VRR flicker, or low and cause FG artifacts.

Capped at 80 in RTSS or that is after LLS? Can you also confirm for me what you're using in for AA in FS2020?

Tried LLS again with the setup (fixed RR, force G-sync off) in the comment above with FR cap at 30 & 38. Same result when using LLS, input lag and performance that isn't really playable. Can someone approve my posts?

VRR is hard disabled because of the OLED dark scene flickering. It's not FS2020-specific and there is no tolerable option other than disabling it or returning the panel. For now treating it like a non G-sync monitor works really well with initial testing... (ref my OP for the rest of the settings) Monitor: Game mode ON, VRR & G-Sync OFF, ALLM OFF NVCP: No FPS limit, V-Sync ON (G-Sync is disabled at the hardware layer) RSSS: (imgur) In FlightSimulator.exe config set FPS limit at 119.9963 (final RR from testufo/rr after fixing it), FR limiter NVIDIA reflex, inject reflex markers, rest defaults. FS2020: (imgur) Only change was turning SecondaryScaling back to 1.500000 You can see in this cap (again, the snip tool's limiting capture to potato) the FR is solid and in-game performance is smooth so far. I haven't put this config under any real CPU load yet, but at that point I am hopefully down to just tuning the simulator layer. https://youtu.be/Peph5FQqDXM

To be clear I don't have any issues with strobing/flickering related to using to LLS. The catch 22 I am in is: VRR enabled | No LLS (native FG w/ 3.8.1 DLL, DLSS set to Quality): FS2020 is perfect, no issues with tearing. The OLED dark scene flickering happens due to VRR limitation. VRR disabled | Using LLS x3 w/ FR capped at 30 (or 38): FS2020 has a noticeable amount of input lag and performance overall is unplayable. This is the video above. VRR disabled | Native FG capped at 115 FPS: FS2020 is overall playable, but very noticeable screen tearing especially in high CPU load scenarios.

The strobing in dark scenarios is a hard limitation of my OLED with VRR. I have no choice but to use a fixed refresh rate with my hardware. Any ideas here @Ianrivaldosmith? At the moment the only config somewhat playable is capping FR at 115 and binning LLS. I've been to the ends of the internet on this over the last two months and I'm at a loss here.

Summary of changes: - NVCP FPS Limit 30 - LLS App ON (LFSG 3, X3) - Reenabled ProcessLasso (MSFS affinity = High) and ParkControl Right out of the gate the frametime is stuck hard around ~30ms. FPS does not drop below the 30 cap. There is very noticeable input lag however. Overall the performance with LLS in this config is not playable. Video if it's helpful for watching the hardware values, but snip tool's format means the FPS shown is equivalent to a GameBoy. It also didn't cap the LLS frame readout. It was sat at 30 / 90.

Wilco, but do you think the behavior indicates something underlying at the OS or possibly sim layer is the root cause?

Frequently may be a relative term, but enough that I think its the underlying issue especially if trying to use LLS. For example if I disable VRR, remove LLS from the loop and cap at 115 FPS in NVCP I can see the sim taking a hit to frames (drops to 50-60 with heavy camera movement) on a semi-frequent basis, but not frametime which stays <10ms. Drivers for the hardware are all up to date. The hardware itself is not under stress, ~40-50% CPU and ~<65% GPU usage sustained average. G-Sync is on in NVCP. Game Optimizer in the LG settings bundles VRR and G-Sync on the same toggle.

I am stuck between VRR flickers OR screen tearing, with LLS or any other method. Any advice would be appreciated. HWINFO AMD Ryzen 7 7800X3D MSI MAG B650 TOMAHAWK WIFI NVIDIA GeForce RTX 4090 32GBx2 DDR5-6000 NVCP Global is defaults MSFS Profile (default unless listed) Max Frame Rate: 38 Power Management Mode: Prefer Maximum Performance Vertical Sync: OFF Lossless Scaling App Scaling Mode AUTO / FULLSCREEN Scaling Type OFF Frame Generation LSFG 3.0 Mode X3 Resolution Scale slider maxed right Clip Cursor OFF Adjust Cursor Speed OFF Hide Cursor OFF Scale Cursor ON Rendering Sync Mode DEFAULT Max frame latency 1 HDR Support OFF G-Sync Support ON Draw FPS ON Capture API DXGI Rest is off/default LG OLED42C4PUA (monitor) Relevant settings: HDMI 4:4:4 Pass Through ON Game Optimizer ON VRR & G-Sync ON ALLM ON Usercfg.opt Version 66 {Video Adapter "NVIDIA GeForce RTX 4090" Monitor 0 Windowed 1 FullscreenBorderless 1 WindowActive 0 Resolution 3840 2160 FullScreenResolution 3840 2160 PosX 0 PosY 0 AntiAliasing DLSS DLSSMode QUALITY DLSSG 1 Reflex ON FSRMode BALANCED PrimaryScaling 1.000000 SecondaryScaling 1.000000 SharpenAmount 1.000000 ReprojectionMode 0 WorldScalePercentVR 100 AntiAliasingVR TAA DLSSModeVR AUTO DLSSGVR 0 ReflexVR ON FSRModeVR PERFORMANCE PrimaryScalingVR 0.800000 SecondaryScalingVR 1.000000 SharpenAmountVR 1.000000 VSync 0 HDR10 0 Raytracing 0 PreferD3D12 1 IntelMessageBoxDisplayed 0 CurrentGPUDriverVersion 566.36.0 DoNotShowGpuDriverRequirementPopup 0 }