FPS consistently below 20
Before patch 9.23 fps was 60~70, which is playable (i.e. skillshots are dodgeable).
After patch 9.23 fps is 40 during peaceful moments, 520 during teamfights (i.e. you are walking in straight lines into skill shots and traps).
If the new complicated changes to dragons and terrains inevitably mean that we have to play at single digit fps, I'd rather we reverted back to the simpler versions. Please acknowledge that not everyone playing league has invested a few grand in an expensive computer with amazing processing power. This is how games lose players.