What must I improve on the PC to stream / record?

I would like to stream or record gaming videos, what should I buy / improve, so that my pc records it in good quality. At the moment, it's always jerky in the recording and in the game drine also very, so it's not possible to record something good, the stream is nothing… Would like to stream / record Fortnite. Thank you in advance.

My PC data:

Windows 8, Type: x64 based PC

Intel (R) Core (TM) i5-4570 CPU @ 3.20GHz, 3201MHz, 4 cores, 4 logical processors

Physical Memory: 8GB… Total Virtual Memory: 10GB

Graphics card: AMD Radoen R9 200 Series

If you need more information, I'll gladly add it…

The graphics card is bad underground for your project.

So, your CPU is really nothing for streaming.

The best and cheapest would probably be a Ryzen 5 2600 or 7 2700

But you would need a new board and RAM (16GB)

Then it's the graphics card's turn. What would be your budget overall?

Just the cheapest thing there's, but still good enough for it.

Would a new graphics card but sufficient?

First change the graphics card. A GTX 1660Ti or Vega 56 are installed.

The processor is an AMD Ryzen 2600 with B450 motherboard and 16 GB DDR4 RAM. If you just want to record, then you can also leave your i5 4570.