

What you are experiencing is called a learning curve. Don’t let it get you angry, learn from it. NVIDIA is known to be problematic for Linux users (I have had my share of issues with my 2080 Ti) but once it is setup it is problem free. Librewolf is known to be one of the chunkier options, but 3gb really isn’t that much for modern systems (especially if you have 16 or 32gb of memory). I would personally take Librewolf’s privacy features over closed-source Vivaldi any day. Linux overall is much more efficient than Windows and I would bet that your system idle memory usage with nothing open is lower than it was with Windows.
I’m happy with 1080p content. I have a 4k TV and from the couch I can’t see a difference. I would be perfectly happy with a bargain 4k TV, bigger the better.