[ef11]

I had some of these same issues.

I replaced coils, plugs, injectors to no avail.

Finally, had the dealership replace the HPFP under warranty and the car runs amazing now with no issues. Not saying that is definitely your issue, but to start having that many misfires all of the sudden, seems it could be the culprit.

I was logging my performance through the JB4 and you could clearly see that the PSI from the HPFP was not keeping up at higher RPMs and I was misfiring.

Also, I had EXTREMELY rough cold starts. Stumbling for over a minute to the point the car would sound like it would turn off...

Good luck!