There's a bug where you can't leave the upgrade selection screen if you were already full, selected any upgrade but the last, and finally clicked on the last upgrade instead of replacing any other one.
I just open the game, it starts lagging... and the options... how did you do that... you can only change the resolution... Gsus it's amazing... btw I see the game is cool but please make it less laggier, sorry for not having a 2000$ pc :)