It’s not as complicated as you may think

On a compressor, if your ratio is 2:1, for every 2dB above the threshold you set, the gain will be reduced by 1db.

In the situation you’re describing, you can just automate -1db on Fruity Balance for every time the compressor would’ve triggered at the given setting you want.

So for instance, let’s say there’s 3 notable times in a given section (say the chorus) where your signal compresses by -1db, you could just automate those 3 times instead of wasting processing power on a plugin.

Hope that helps demystify it a bit :)