if your bandwidth can handle BOTH at same time then yes... Ive streamed live games no issue.. but I also am on a 200+Mb connection and the main wifi router is on fiber optic line,, so I have the bandwidth to allow the streaming and gaming .. if you mean individually.. absolutely I stream all in HD no issue from all my streaming sites.. and play all my online games no issues at all no lag etc.. but that all falls really towards your wifi connection itself not so much the antenna.. this is a USB 3.0 so fast and can link to 5g networks so as long as your router has 5g band available