The first thing you should check is that you're good at kissing, good hygiene, that these girls are enthusiastically consenting, that the public make outs aren't too public, etc.I have been trying to date higher quality women as I want a relationship and on quite a few occasions I've had girls go cold on me after kissing/public make outs.
I read advice in a book once that guys shouldn't forget that girls will get bored if all you want to do is make out and stop talking once the kissing starts.
If you have the typical definition of high quality I'm surprised you're even able to get public make outs on the first/second date; most would associate that with party girls.
For your goals I'd say tone down the sexuality and ramp up more slowly and smoothly
Personally I'd count getting a first/second date make out as a win and write off any girl who goes ghost as not being into me enough.