OBS NDI Question

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So i have been trying to reduce my performance hit that streaming has while playing games, and i don't want to spend money on a capture card. So i have tried the NDI plugin for OBS ,but i have problem when using NDI and streaming where my ping just tanks. With ndi off and me streaming normally its fine but with both going its very unuseable. So the question i have is there a way to use OBS NDI between  my PC and my laptop? ( laptop is where i want to stream and PC where i am playing the game) I believe the problem is with maybe my router being over loaded or something, my PC is using ethernet and the laptop is using wifi. Any help is appreciated i haven't been able to find anything related to my question.