!!Not sure if this works for everyone but it worked for me
> If you have a Nvidia graphics card, try going into the Nvidia control panel -> Manage 3D settings -> Program Settings Tab -> Select the League of Legends client ( If it's not in the drop down tab you'll have to add it). -> Disable "Antialiasing - FXAA" -> Select Apply
> This fixed the blurry issue for me, hope it helps.
This started happening after my client updated today.
Only the client is blurry and it doesn't seem to go away however in game is fine.
I've tried reinstalling, repairing, changing settings with the leauge exe. updating my graphics driver nothings helped.
~~Anyone has a fix? ~~