Your best bet would be a full wired ethernet connection (no wireless). How is your TV network enabled? Wireless (2.4 or 5Ghz), or wired? Do you live somewhere with a lot of WIFI congestion (apartment, condo, etc) ? Where are the TV, router, and PC relative to each other?
Ripping the bluerays is the only way to stream them realistically. That does violate the copy protection and may or may not be legal where you live.