Same here. No issues until the last software update. Roku seems to think ignoring the problem is good customer service. This is the last Roku I will buy. Any decent company would post what they are doing to fix the problem.
You obviously have no experience with Sony or Samsung.
The both put out updates with zero information about what was fixed/updated. And you have no clue what they are working on.
Nvidia Shield, Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.