I was about to post about this same issue though for me it happens if I go into the computer in "your room" and then use the back arrow in the lower left instead of properly exiting the computer with the power button. it also bumps me to the second town screen (where you can enter the park or beach or church) when I click that back arrow so maybe it's connected?
ATM, the sex scenes on the slave route are repeatable, the love ones are not. But the Love one is the main one, and will be the better one in the end, the slave one is just for people who don't care about story as much as sex.
I think my timer says 52 hours and I've completed almost all the story events. but I also didn't exactly rush through so YMMV.
no idea, but have replayed several times. i think my ingame counter is over 100 hours. also i don't rush and play mostly for the story
plenty of Lewd content anyway. (headpats and handholding counts) 
Really depends on how fast you can read. If you're focused on raising their sex stats, that alone can take you a couple of hours even if you're skipping the text simply due to the amount and that some of them have specific time slots to be performed.
Just need a bit of clarifying, it would not the first time someone post an update of a game and it only works on the previous version instead of it being several version back.
Every update version requires the one before. Obviously.
To be more precise from how Runey's patch work and, as it looks like, he use
Hi, sorry for the rather late question, but I've applied this fix and this did not help, is there some sort of console command that needs to be entered first?
That fix only works in v0.17.x as a safety measure, in case the issue was fixed in later versions but people tried using it anyway and messed something up.
bot_friendship = 19 and solve it yourself.