I found that streaming video (Netflix) didn't work well via the wireless connection to my DVD player, but when I went to the trouble to install wired Ethernet the problems were resolved. Otherwise I use wireless at home.
I stream Netflix and Amazon videos over our wireless all the time with fine results. However, I use my laptop and plug it into the TV with an HDMI cable. I have noticed that the wi-fi in the DVD player can be a bit fussy at times. I suspect the problem is in the player, not the link itself.