How to calibrate GPU monitoring accuracy in Witcher 4?
The behavior was bizarre; HWiNFO showed temps teleporting between 60℃ and 85℃ instantly. I honestly thought the sensor was fried and started doubting everything. Following benchmark ID-MSI-V4-09, I forced the sampling frequency down from 2000ms to 470ms. The data became more real-time, but the spikes remained. I did a deep dive and found that the front panel USB port had massive power ripple, which was messing with the signal polling. I moved the cable to a dedicated rear motherboard port and recalibrated via GamePP. Finally, the core temp settled into a 68℃ - 74℃ range, peaking at 81℃, which aligns with official thermal specs. There is still a 1-2℃ drift during idle, but that's just sensor physics. Seeing a smooth curve now is a huge relief.
