Thank you for your explanation.
I like this tool and am a heavy user, so I understand its functions.
However, I am disappointed that the "prefs.json" is changed by this tool.
Let me go into more detail.
Most displays are around 60Hz.
Recent gaming displays are 144Hz, and expensive ones are 240Hz.
If all your displays are multiples of 60, then your default settings for this tool should be fine, but for HMD users using VD, the minimum is 72.
If you create a scene with PhisicsRate set to 72 and PhysicsUpdateCap set to 2-3, the smoothness will be different from your default setting of 60_1_1.
That's why I said it was unfortunate that this plugin overwrites "prefs.json" with the user's intended settings.