No streaming video, blurry HD video

[Dmen]

Dear All,

I have recently purchased a brand new Xperia tablet Z2 with LTE. After having updated the os and sony bloatware, I am experiencing problems in viewing streaming videos on sites like Youtube, dailymotions and others. No matter what browser you use. ipersonally use chrome, opera and firefox.

Moreover I have copied and pasted some HD movies into the sd card and when there are scenic shoots (i.e. a drone hovering on mountains) the images are blurry.

What is the problem? Any solution?

I have already tried a factiry reset but it does not work. 

[Rickard]

I recommend that you contact a service location for further investigation of this and assistance with having it repaired or replaced.
For more information about how to submit your tablet for repair and where, contact your local support team.

[Dmen]

Hello. Even after the hard reset still I have same issue. I personally think it is due to bad software. Can I flash the room and install Miui or lollipop factory image?