The log doesn't have a limit so it just keeps going and going, although now that you mention it it's odd that that causes it to slow down so much. I am pretty sure it's the sex log getting too long that causes it to lag though.
I mean hypnotic potency, you have to level it up a certain amount within certain timeframes. The level right before you win is Obedience and then when you upgrade it to Lovers you win. You can just spam conversation or regular touching to raise "Like"Do you mean Hypnotic Potency or Obedience? The current strat of 3+ orgasms from the 'personal massager' and nip/clit caps doesn't seem to be doing much, nor does talking to her either, Not exactly sure what contributes to her liking me.