Can you please list the specs to your existing build like so:
CPU: Intel i5 9600k
Motherboard: msi mpg z390 gaming pro carbon ac
Ram: 8gb Corsair ( not sure the mhz I’m out of town) I believe 3600mhz
SSD/HDD: I have a 500gb ssd Samsung and a 1tb m.2 that I have my games on
GPU: 2060 super
PSU: sea sonic focus gx 750
Chassis: Corsair carbide series air 540
OS: windows 10 64 gb
Monitor: acer nitro x v2 27inch
From the 3 pieces of info you've added, I'm assuming you're going to need to look into an i7, at the very least with either a 16GB kit or a little more ram. What platform are you streaming on and what sort of titles are you streaming?
I have used twitch studios and obs/ only streaming call of duty.
Thumb rule, if you plan on streaming and gaming off the same system, you will need anything above an i5, meaning an i7(at the very least), and a baseline of 16GB. For your platofrm you should ideally be looking at DDR4-3200MHz rams to hit that sweet spot of the processor.