I bought GDT on Steam and played on the first time ok.
On the second time entering the game, the UI was in russian or other eastern language and I can´t change the language to english again.
I tried to change UI on Steam UI to en-us, since I used it on pt-br, but it did not worked.
Deleting local content and installing again did not work either.
The only thing right about your video card is the “Nvidia” part xD And I wouldn’t have said anything but, I do wanna know where the “GT” part came from?
Which one is the “settings” and “language”? Ok, after trial and error i found something like "asldjaskldj (beta) and figured out that this was the one.
A suggestion, when the game is tranlated, keep the tag on buttons and the option to change the language with both versions, english and tranlated.