Question / Help Game doesn't lag or skip frames, but stream does

[Harold]

And that warning is meaningless if you're not trying to stream at the same time as you're trying to record.

Regardless, your system is underpowered.

 

[ReAid4]

And that warning is meaningless if you're not trying to stream at the same time as you're trying to record.

Regardless, your system is underpowered.

is there any solution?
when im in the main menu everythings fine, but then as soon as the actual game starts, it lags terribly.