Multi monitor madness
Multi monitor madness
I’m experiencing a strange problem with my LG 32GS95UE-B monitor. At 4K 240Hz (Mode 1), everything functions perfectly. However, when switching to 1080p 480Hz (Mode 2), the screen blinks repeatedly—switching on and off without disconnecting from the PC. It doesn’t shut down; it just keeps blinking. Interestingly, when I first bought it, testing it at my cousin’s place with only one monitor worked fine. But at home, two monitors are connected, both running 1920x1080 at 60Hz. Remarkably, removing one secondary monitor doesn’t affect performance in either mode. All GPU drivers and Windows updates are current. Could it be a bandwidth issue, an EDID conflict, or something else I’m missing? Please share any suggestions.
PC Specs:
- CPU: AMD Ryzen 7 7800X3D
- Cooler: Deepcool LT720
- GPU: PNY XLR8 Gaming VERTO EPIC-X RGB OC RTX 4070 Ti
- Motherboard: MSI MAG X670E
- RAM: G.Skill Flare X5 64GB (2x32GB) DDR5-6000 CL30
- Storage: Samsung 970 Evo Plus 1TB NVMe, 2TB NVMe Seagate 2TB
- PSU: ASUS TUF Gaming 1000W 80+ Gold
- OS: Windows 11 (fully updated)
Monitor setup:
- Main: LG 32GS95UE-B
- Secondary: Asus MG248QR (1080p 144Hz) & Asus VG279Q (1080p 60Hz)
before this my main display was an Alienware 500Hz panel with 1080p resolution, which feels strange that it doesn't function anymore.
If DSC is turned off, your maximum frame rate stays at 95 Hz over DP. HDMI is marked as not available. The details on the NVIDIA site suggest possible bandwidth constraints from the RTX 4070 Ti, possibly due to combined output speeds. Check the specs for more info. For reference, the RTX 5080 offers improved bandwidth with DP 2.1b and HDMI 2.1b.
I think the GPU likely didn’t reach 500Hz. It probably matched the monitor’s capabilities and settled for the highest supported rate. The flickering might happen because the GPU attempts its maximum supported output for the resolution, while the monitor expects a lower frame rate of 480Hz. Since the GPU only provides 240 frames, it appears to blink.