I have a MacBook Pro with a 2.2 GHz processor 8 GB of ram and an AMD Raedon HD 6750M 1024 MB Intel HD Graphics 3000 512 MB Graphics card. After playing League for a year, I've always had low frames, around 20-25. However, now League runs constantly at 15-7 frames and I don't know why. The game starts at a good 30 frames, but when minions spawn, it drops to 15. All of my video settings are at their lowest but what confuses me is that when I jump into a custom game with bots, I run at 20-30 frames the whole time.
There is no real way to increase the frames except make it the only program running and change the settings to a minimum. A tutorial on how to do this is provided here.
Hardware can also be improved with better graphics cards and more RAM.
The possible reasons that this is happening to you may be of patch 6.22. Many people have been complaining (here) about this, saying that changing the settings does not affect the frame rate drops, with people saying that the cause is due to the alpha client and the fix is as follows:
After you joined the game and game finished loading and you're on the summoners rift you gotta do this! ALT+TAB from league of legends > Task Manager > End process Leagueclient.exe!
A few people say that this did not help but the majority say's that it works like normal now but you have to re-log after every game which can become tedious so many suggest that you:
Yeah, that works but after the game ends you have to relogin again...so just delete the new client...its too early for that.its full of bugs..
A tutorial on how to do this can be found here. (NOT SUGGESTED (SEE BELOW))
A commaent from mbomb007 was brought to my attention that this is not the suggested thing to do. According to the comment you must (in a simpler fashion thank god :D ) :
Don't delete the new client. You'll just have to download it again later. Instead, click the option to use the old client on the login screen (in the bottom-right corner)
For reference a list of patch notes for 6.22 ;
can be found here.
As well as this, many people believe that this has to do with windows 10 updates junking up your computer, which may seem unlikely, but its worth taking a look at if need be.
No one mentioned the frame rate fixing when your fighting against bots but they most likely have not tried this.
Patch 7.1 also brings more Frame rate drops to many people (here)
The fix for most people was to
go into a custom game press ALT+Enter go to video settings and change windowed to borderless. Worked for me. had the same issue /: Good Luck!
So this is not likely a hardware problem as I originally suggested more likely caused by the game developers.
If you have access to a bank card, you could use LiquidSky.
I am not associated with the service, but I tried it, and it really can be a solution.
The service is in Beta, you have to get a key from various websites.
If they are all out of keys, just wait a few weeks.
The new interface with a even more powerful machines will launch in 2 weeks or so.
Other than that, you can just buy a powerful PC, laptop, and get high framerates.
There is no black magic available sadly that could just "boost" your PC/Mac.
Ps.: I had a friend who wanted to play on very low end machine (several times, different machines), and modifying the settings left and right did not do much. If the machine is just too weak, LoL will always run slow. And that game really needs 60 FPS, you cannot really cast spells and such with stutters.
If you live in the US, you might want to try "Geforce NOW" too, once it comes out. ( http://www.geforce.com/geforce-now )
Also a cloud gaming service, though it's a bit (a lot) more pricey, and restricted to the US. However, it uses Nvidia architecture, and will be very fast - so they say.