I have my wireless KB and mouse plus the Steam controller connected to the link but I think if I could get a signal to those when plugged in directly to the PC, there wouldn't be lag. I do have it hard wired to my network vs using wi-fi, I connected using power line ethernet adaptors and connected the TV and the link to my router. Plus if you exit big picture mode in Steam you have full access to the desktop and the controller works well as mouse with access to on screen KB. Really like the set up.
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