performance overlay

Valve's latest Steam Client Beta enhances GPU monitoring capabilities, providing more accurate utilization readings compared to the Windows Task Manager, which often under-reports GPU usage. The updated in-game overlay captures all related processes, reducing sampling errors and aligning statistics with third-party tools like MSI Afterburner. It aggregates GPU usage across multiple processes, offering a comprehensive view of a game's GPU demands. The overlay also distinguishes between native frames and those generated by technologies like DLSS and FSR, and provides real-time readings of CPU load, RAM usage, clock speeds, and frame timing graphs. Additionally, it includes a CPU temperature display on both Windows and Linux, enabled by a trusted CPUID-derived kernel driver. Users are cautioned about the stability of the updated GPU metrics, as this feature is currently in beta and may not be suitable for general use.