I'm looking at 3bet pots postflop (sb vs co) and i'm trying to study a more GTO approach so I'll feel a bit more secure in these spots. The question I have is: in some spots we have a severe range advantage (Kxx-textures come to mind). A solver still mixes between betting an checking quite often. My questions are:
How big a range advantage do we need to start range betting?
From roughly what betting frequency percentage can I adopt a range bet strategy?
Are there any sources (videos on RIO?) on this subject specifically?