I have multiple instances of the same program running. Say I notice in the process tab that one of the instances is using 22GB of RAM. How can identify which of the instances this is, i.e. switch to the associated window? All I see is the option to kill the process, but I'd rather investigate the massive RAM use in a "non-destructive" way.
Download something far more powerful called Process Explorer from SysInternals/Microsoft, right-click the instance, open the Window sub-menu and click on Bring to Front.
You can also make Process Explorer replace Task Manager: