capture

So iam tryng to record games and edit them i like to edit videos been doing it for about 2 years and i want to start uploading to youtube . i used to use fraps for my footage but i wanted to upgrade to OBS now the problem is when i play and record the game No lag perfect 60+ FPS when i rewatch...

i can't figure out why i can't display the full dimensions of the game im playing weather its in full screen or windowed mode when using the game capture feature in OBS.