1440p automatically changes to 30hz which means 30fps when gamingYou ahould be able to set it up what ever way you want it to scale or bot scale and have black bars. What issue are you having?
Then same thing happened with last years LG LED but you could over come the problem by changing the source name to PC and changing the aspect ratio to Just Scan
Problem with the B6 is you can't change the aspect ratio to just scan
You can turn it on or off but the aspect ratio options for 16.9 etc are still there