I had similar problem with Samsung's Galaxy Nexus. It was fast, but after 2 years it became super-slow. Software updates were released only in first year. Maybe

I had similar problem with Samsung's Galaxy Nexus. It was fast, but after 2 years it became super-slow. Software updates were released only in first year. Maybe they use the same CPU limiting? The whole industry of portable ad-clicking devices is awful. Just accept that you have to buy new hardware every 1-2 years. You can't even buy "regular" calls-only phone now.