Think it depends if your running new type wireless or old slow wireless and how your house is built\what he surrounding environment is like.
New AC can run at around a gig per second which is more than adequate for IP streaming I stream FHD with wireless. The old style 54MB although in theory "should" be ok can be laggy.
Older granite (yes granite ) houses have issues with wireless Ive also seen issues with wireless in newer builds with cellotex insulation. Also steel girders have caused issues.
My rule of thumb is if I can wire it do so if I cant then wireless.