It wasn’t something I kept running, just a shortcut that would run the batch file and kill anything that wasn’t responding at the time. I’m not sure if this uses the same command I had set up at the time, but I remember it having a 100% success rate. I had it for one game in particular which would crash and stop responding but any attempts to get to the task manager (even with keyboard) would fail.

I haven’t had to use anything like this since Windows 10 as now you can just press Windows+Tab and move the task to a different desktop and then get into the task manager on your original desktop.