Round two of #SoftwareYouNeedTuesDay!
First, another SysInternals app straight from Microsoft:
ProcessExplorer: https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer
It's Task Manager on crack! You can even set it to replace the default task manager. See which app has a file open, or which DLLs are loaded, or see and manipulate individual process threads, and much more
Next, for the gamers:
Nvidia Profile Inspector: https://github.com/Orbmu2k/nvidiaProfileInspector/releases
This tool allows you to dig deep into the profiles that Nvidia distributes for each game with their drivers. Ever seen a "Game Ready Driver" for a specific title? That's a new profile
Detailed guide here: https://www.pcgamingwiki.com/wiki/Nvidia_Profile_Inspector


