Please make sure you lower poly count on minions. I drop from 200+ frames to under 120 when minions spawn. Thats how poorly they're coded/optimized right now. Its really redick. you said you lowered polycount, but make sure those minions aren't HIGHER polycounts for the love of all that is not FPS lag.
This is an area of the map that we are paying very close attention to. There are a lot of optimization techniques that have been applied to our creatures in an attempt to improve their performance over where they are on the live game.
I just barely created a thread that the Environment team is going to be keeping an eye on for this type of feedback. Would you mind reposting your concern here? That way you can be sure that the right people are seeing it. http://boards.na.leagueoflegends.com/en/c/summoners-rift/edaxMMnt-summoners-rift-detailed-design-feedback
I played LoL on a very old low end portable PC for a long time, never had problems. Either you have problems client-side or yours is really a toaster of the finest kind. and Riot can' t really think about making the game playable for calculators of the old century.
you only need 60 frames lol anything more then that is just going to make the rest of your game slower
