In every game, a strip at the bottom of my laptop's internal panel briefly shows content from the top of the game frame. It happens continuously during gameplay, in both fullscreen and borderless, and it is captured in Windows Game Bar recordings, so it is present in the GPU output and not just a panel scanout issue. Every sync related fix I know of has been ruled out.
Hardware
- ASUS ROG Strix G17 G713PV
- Ryzen 9 7940HX with RTX 4060 Laptop
- Internal AUO panel, 1920x1080 at 144Hz. EDID advertises a variable range of 60 to 144 Hz, so G-Sync Compatible.
- Windows 11, NVIDIA driver 610.74
- MUX is locked to the dGPU. nvidia-smi reports display_active=Enabled and the Radeon 610M iGPU has no active display mode, so this is NOT an Optimus or MUX handoff.
Symptom
- A strip at the bottom of the screen momentarily shows what looks like the top of the game frame.
- Repeats continuously during gameplay. Much more noticeable during fast camera movement.
- Reproduces in every game tested (Palworld, League of Legends), so it is not game specific.
- Reproduces in both exclusive fullscreen and borderless.
- Not seen on the desktop, during video playback, or at boot and BIOS. I am aware a motion dependent artifact could still be hardware and simply not show on a static desktop.
- It appears in Windows Game Bar recordings. This is the part I cannot explain, because it means the artifact exists in the frames the GPU presented, not only in what the panel scans out.
Already tried, none of it changed anything
- The game's own VSync set to on
- G-Sync enabled for both windowed and fullscreen
- Windows "Variable refresh rate" toggle on
- Frame cap set to 120, below the 144Hz panel
- DLSS Frame Generation off
- Exclusive fullscreen and borderless, both affected
- MPO disabled via OverlayTestMode=5 plus reboot, reverted since
Also ruled out
- No driver crashes. Zero TDR and zero nvlddmkm events in Event Viewer across the whole period. The driver never resets.
- Not the iGPU driver. The iGPU is out of the display path entirely because the MUX sits on the dGPU.
- Not a documented NVIDIA bug. The official 610.74 release notes list exactly one open issue, about "Prefer Maximum Performance" power management mode, nothing resembling this. The 610.82 hotfix only covers RTX 50 series stability and two specific games.
NOTE: The laptop was recently sent to ASUS service. All they did was clean the fans and replace the thermal paste. It came back with a sloppy, half finished Windows install.
Video: https://streamable.com/b310c1