Picture search: how to deal with sizes?

I will use the MIDI trigger function to step through the instrument presets. Which is a huge relief. But the size might change in a busy environment. So the image search will be unreliable and I can't change it each time the windows size changes.

  1. Does BTT provide a smart scaling function that it still reacts correctly?
  2. To make it stable, I choose a bigger field to search for, then I re-locate via "move by x/y". How could I make this more stable, with each window size the x will change.

Pictures: 2 screen sizes for the same instrument, the red square is the fixed x/y size which causes the problem.