Could you please add FULLSCREEN mode back to the game? It's hard to play when you have to be in FULL HD 16:9 all the time, cause you simply can not choose any other resoultion in game since you have added FULLSCREEN-windowed option.
I would like to play 4:3 on fullscreen and have no lags anymore.
I mean, maybe you could add "Fullscreen" and "Fullscreen-winowed" options into menu, so anyone could choose what they like.

It's FULLSCREEN-windowed since patch 1.7.
You can no longer play in FULLSCREEN with choosen resolution.
FULLSCREEN-windowed forces you to play on your highest resoultion possible (Full-HD 16:9 for me).