05-12-2021, 11:21 PM
You are using Windows 10's Task Manager to monitor GPU usage. The answer here is "Do not do that". It doesn't show you real/compute usage, it only shows you "3D/Render" usage, which hashcat is clearly not. Hashcat's reported usage is correct, 98% util. Task Manager is just refusing to count that and show it to you. Use a tool like MSI Afterburner or GPU-Z to monitor usage and you will see numbers that agree with hashcat.