Weird resolution on Traktor

Well Traktor is a lot more complicated than Serato and diagnosing this without more information will not work.
So
what computer?
what operating system?
what screen resolution?
is this computer solely for DJing?
if not do you have lots of other drivers running?
…. and anything that comes to mind.

Most important: Did you read the HUGE Traktor manual to set everything up?
If not, then do that first… Traktor is complicated and reading AND understanding the manual in its full form is mandatory to get it to work properly.

If your screen is set to 1366×768 then Traktor should be able to just use that.

Don’t forget to enable full screen mode. If Traktor is running in a window, then click on the button with the square, in the top right, right next to the “NI” logo. That should set Traktor to full screen mode. You can also configure Traktor to start up in full screen mode, in “Preferences” -> “Global Settings” -> “Miscellaneous” -> “Switch to Fullscreen on Startup”.

I think you’re problem it’s with Traktor Layouts. At the upper right corner of Traktor you will find the ”Layout Selector” and some shortcut buttons (Maximize Browser Button, Preferences Button, Cruise Mode, Fullscreen Button), you must have the ”Extended” or ”Essential” Layout selected, which will only show a very small portion of the ”Browser List”, you could change it to ”Browser Layout” or you could map a button in your controller to be used as a ”Maximize Browser Button” (it may probably have one already, go to ”Controller Manager” in the ”Preferences Menu” and look for it), when you want to browse threw your list press the button to extend the ”Browser List”, after you load the songs to the decks press the button again to go back to whatever layout you’re using.