When it looks like a sex scene is about to happen and then it gets cut off for some reason. Like come on you're going to tease me like that and then have me wait longer to fuck this girl??
I like a good balance of both. There's really no point in having sex scenes if there's no build up to them. But also too much gameplay in between scenes can get boring.
An in-game walk through is a mandatory requirement for me. I've played games where I have no idea what the fuck I'm supposed to do and a walk through makes it so much easier. I'm here to fuck girls, not try and solve riddles.
In terms of AVNs, I play them when I'm in the mood and have the time. Sometimes I play them several days in a row, and other times I might go a few months without playing one. But in terms of games in general, almost every single day.
Season 1, really damn good. Season 2, not as good but still enjoyable. Season 3, kinda boring so far but still has it's moments. But overall the best sex game I've ever played.