ERS Malfunction - stuck on 100%

ERS is stuck at 100%. A few days ago, it was deploying in every mode as if it were on "Medium." Now, nothing works at all. I press "Overtake," but nothing deploys. Because of that i have 200hp(?) less, and it's impossible to race against AI, as it simply overtakes me on the straights.
I haven't tested it online yet, but it doesn't work in Braiking Point, MyTeam, Career, or GrandPrix. 
I tried setting the ERS deployment in the driving assistance to automatic, closing the game, reloading the Grand Prix, but nothing helped.
I play on PC via Steam, but I've read about this from several people playing on other platforms. I hope this gets fixed as soon as possible, because it makes the game unplayable.

(Full throttle, end of long straight, not even eighth gear, on "Overtake" the whole time, no power)