fortnite smoothness

Hi i just started with streaming on twitch but when i use obs streamlabs or other version my game isnt smooth when i stream i really want to know if i can stream with a msi geforce gtx 1060 3gb old version with 3 inputs (1hmdi. 1vga. 1 display? And 16 gb corsair 3200 mhz ddr 3 ram an i7 3770 cpu...