Kennen nerfs - an unknown nerf?

So, I've been a longtime kennen main and at this point I can't even enjoy playing kennen anymore. When I say long time kennen main I played him season 1 . I've played him successfully as top, mid, supp, adc, and even jg for a short time when the whole sated jg thing was around and runnans was hilarious. They've nerfed the little guy for years. let's review. they took away attack range and W cooldown so you couldn't chain W's. they took away the range on his W so that you couldn't get in, mark an opponent, and then kite them for a more opportune moment. then riot threw him a bone and made his ult hit all 5 targets instead of 3 random ones - that was a great until what they did shortly after.

shortly after that protobelt came out and all hell broke loose. They decreased kennens ult damage unless you can somehow magically get your opponents to stay inside of it for the whole duration - which is dumb. They called it a buff but for any experienced kennen player it was a huge nerf.

after that riot decided, and this is what killed kennen for me, that he was too versatile in his builds. So they decreased all of his base damages while increasing his scaling. They took away damage on his AD raitio for W as well. they "buffed" his E by making it do more damage and giving an attack speed boost (his E is used to either engage or escape). this ruined my support kennen, my top hybrid tank kennen, my AD kennen, and a ton of other fun builds I've used kennen for. Basically it enforced kennen to only be usable as an AP caster.

but it doesn't stop there. I quit league after all of those nerfs on my favorite champ and returned to something slightly more horrifying and less spoken of.

I've noticed that kennens mechanics are different. I've noticed a time-lag between his spells and other actions. I'm not sure if this was announced or not but at this point I'm sure of it. I can no longer Q and auto and watch the two projectiles hit at nearly the same time- I have to auto then Q or else there's a delay after the Q to where I can't input an auto or another spell. There's a distinct time delay between any spell cast and being able to input another command. The same holds true for other things I used to do. Q, flash, auto, E Ult. Flash E q. There's a delay between the casts as if there's a brief recovery period. It's really hard to get split second stuns off anymore and I'm not able to play him as he used to play. Has anyone else noticed this?