I have 1080ti and the whole time ingame and while game is in background and I look something on windows my GPU is completely busy and fans run 100%. This aint normal, its crazy!

The game is not optimized. Simple :)
And none of the developers are going to admit it or at least come here and try to offer support. Since yesterday I saw multiple threads opened by users with the same issues.
The only reply you will see on these threads (if there is a reply) are from other people saying the same thing.

I am not sure if they can reply something useful.

I think they use the forums for feedback since they have a small team and they can't afford to give answers or helpful advice to everyone.

I have a GTX970 and I don't have any problem. It takes time to optimize a game, they just released it yesterday. Why don't you all stop complaining and give them time to fix their issues and optimize the game. No church was built in a single day.

Maybe because we bought a product in a FINAL version, not a beta. if you buy a car and the engine is not running you would wait for a mechanic which maybe comes...maybe not? Lol

The worst of all is that no one replies here...if they would send the facility manager to post to all that they are investigating would be better than nothing at all...that really sucks to be honest