User blog comment:V0ldek/The biggest mistake of Season 3/@comment-5266525-20130415215814/@comment-8072585-20130416102222

It doesn't slow down that much "always" -> it slows down only if the system decides that your hidden rating (ELO) is too low for the higher division/league. It can even just stop at 99 (at least that's what a forum player said).

I myself had LP gains of just 2 points when I was getting closer to advancing from gold to plat. Probably because it was my 3rd promotion attempt -> the first two times I didn't notice any degrading gains at all.

It is a nice feature though I don't like that it is so hidden. With ELO I could have expected a constant +/- 15 ELO for each game, now I have really no idea how the LP points will change.