Why is my Manli RTX 5090 D v2 OC flickering in dark scenes?
While exploring the underground colony facilities, the metallic textures on the walls started flickering like crazy, which completely killed the immersion. Even though this Manli card uses GDDR7 with insane bandwidth, the default frequency curve had a nasty 12-18ms response lag during low-load transitions. I first tried forcing 'Prefer Maximum Performance' in the NVIDIA Control Panel, but my core temps spiked to 74-78℃ and the fan noise was deafening, yet the flickering stayed. It was honestly a waste of time. I eventually used a clock tuning tool to lock the memory clock into a non-symmetric range of 2100MHz-2300MHz and nudged the core voltage to 1.02V. Checking the real-time monitor, the memory voltage swings dropped from a wild 0.15V to a steady 0.03V, and the flickering vanished. I actually crashed the game a few times while underclocking until I dialed in the voltage offset correctly. Now, core temps sit at 62-67℃ and VRAM stays between 71-76℃. Stress tests show zero memory errors and frame times are rock steady at 5.1-6.4ms.
