Tom's Hardware Nvidia driver 595.71 reportedly limits overclocks on some GeForce GPUs, but not all — troubled driver release seems to stifle voltages on RTX 40- and 50-series cards
Users report that Nvidia's latest 595.71 driver is creating artificial voltage limits on many RTX 40- and 50-series GPUs, causing some products to lose as much as 200MHz in overclocking headroom.