How to fix power delivery issues on Huntkey T620 in Cyberpunk?
Running Path Tracing with a 50-series card is an absolute dream for visuals, but I hit a wall in the neon districts of Night City where frames would plummet from 90 to 40. It was a jarring experience at 4K. The Huntkey T620 Snow was struggling with transient power spikes, and the single 12V rail had ripple fluctuations between 50-65mV, which messed with the GPU's voltage regulator. I tried capping the frame rate in the driver, but the game felt sluggish, so I knew the power delivery was the culprit. I ditched the daisy-chained 8-pin cables and ran two separate PCIe cables from the PSU, then enabled the 'Ultimate Performance' power plan in Windows. GPU-Z showed the input voltage tighten from 11.7-12.3V down to a stable 11.9-12.1V, and the stutters stopped. I had some weird fan resonance after the cable swap, but a quick curve tweak fixed it. PSU temps are now 45-52℃ with fans at 1400-1600RPM.
