This is sort of like the TF2 incident now....

I am having the same issue so here are my DxDiag and my r3d logs...

Everyone's been having this problem. If you look at Colbycheeze's or LegendCommentaries's latest videos, you see random frame drop to 30 or 20 from 60.

RIOT DO something this issue is making your game unplayable

this is the only game i like to play but the only game i cant play because of this... and its for longer than 1-3 seconds aswell...

heres my dxdiag im having the lag spike almost every game atleast once

Hi again guys,

Thank you for the continued insight and discussion into this topic. Hopefully we can come up with a solution soon.

I went back over some of the information given. It appears that most to all the players experiencing this specific problem have more than 2 cores as well as Windows 7. For this reason I want to re-visit Lucifiel's fix by disabling "core parking".

This page describes the necessary changes in detail.
http://forum.cakewalk.com/tm.aspx?m=1861804

I would strongly recommend using NirSoft's RegScanner to make these changes:
Website: http://www.nirsoft.net/utils/regscanner.html
Direct Download Link: http://www.nirsoft.net/utils/regscanner_setup.exe

Why use RegScanner? As the guide details you will need to make these changes to several different registry entries. RegScanner makes it easy to make sure you got every one of them. If you don't get them all the issue may re-appear at seemingly random times.

Even if you have already made these changes and still experience the problem I would go ahead and get RegScanner to make sure.

I look forward to everyone's feedback on this fix!

Edit: I just wanted to include this information to make it easier for you guys:
Key: 0cc5b647-c1df-4637-891a-dec35c318583
Name: ValueMax
Default Value: 64
New Value: 0

trying the reg fix now

Heres my logs.