Yes, that’s what I meant and as said, I’m no expert.
Why do you think it makes code execution slower?
And if it does, is it really notably slower?
You could also use something like { //region comment start } // region comment end
and when it goes to production delete those lines.
One other option, which just right now comes into to my mind,
might be to use hide lines (ALT+H) (view menu).
I don’t like it because you need to take care that you don’t do nested hidings - maybe you like it?
Cheers
Claudia