Originally Posted by
Darus Grey
OBS and Xsplit.
Honestly, there is nothing lower impact. You can make either program lower impact by doing things like lowering the resolution, and doing things like making sure you're recording to a different HDD/SSD than your OS and whatever the game may be running off of.
But the true is, at the end of the day recording/broadcasting is very resource intensive, so if your PC is struggling... $$$ is basically the only solution.
As CS mentions, some of the "capture card specific" utilities get around this(like aver media's and blackmagics "default" recorders), but they're very very focused programs targeted at one device. They can use optimizations that general purpose software can't.
The sacrifice is features.
There's workarounds, but it's all $$$. So if you're on a budget, pretty SOL most the time.