Seconded..... I use both opera and opera Beta on an NVidia Android Shield TV. I updated this to the latest NVidia release based on Nougat.

After updating, files STILL download, but at the point of completion, the Brower (wither normal or Beta) locks up completely....

Sometimes, if I am quick, I can force close it. However, if I am not quick, it then affects the rest of the Android System and I get messages that System is not resppnding, plus Leanback launcher is not responding and I have to power off the Shield TV.

If I refrain from Downloading, both Opera and Opera Beta are working as expected.

Both were downloading fine on the previous NVidia relase based on Marshmallow.

For Info, I have tried both the current version of Opera & Beta and and old v37 verion I had kept. Both show the same lock-up after downloading.