The lines shouldn't be too bad at this point. Use the business class check in desks to get your passport check and then fast track security. Passport control has improved significantly with the automatic passport kiosks for EU citizens freeing up lots of resources.

Personally I'd say 90mins is more than enough time to be able to sit down and enjoy a couple drinks in the lounge before heading to the gate.

Though remember there can be a line to get through the US security check at the end of T4S, even in priority, so don't forget about that.