So how do you determine if your headphones have the vulnerable chip in them?
cmnybo
The GPU won't have any issues encoding several video streams at the same time. That's not really necessary though. The cameras will do the encoding for you. Just set the bitrate and framerate that you want on the camera and pass that through. Most cameras support two streams, the secondary stream is usually limited to SD though. All of my Hikvision cameras support RTSP. It's mostly just the consumer grade crap that only works with the manufacturers cloud service so they can spy on you or restrict features whenever they want.
Don't make the mistake I did and buy any Hikivision stuff from Amazon. They are all grey market and the firmware can't be updated. I tried to update one of mine and now the user interface is stuck in Chinese. You have to get them from an authorized distributor.
My watch runs for years from a coin cell. There's no way that I'm replacing it with an internet connected spy device that constantly needs to be charged.
I would much rather have a slide out keyboard.

The only real solution is to always keep your source files. PDFs are not intended to be edited.
I just keep all of my music in an NFS share on my NAS and play it with Rhythmbox or VLC. I keep a compressed copy on the SD card in my phone to listen to when I'm not home.
Don't install their apps either unless it's on an old phone that you've wiped all of your personal data from.
It's certainly not an ideal solution, but it's an option that will usually work.
I've used Optar. It works a lot better than just printing some QR codes. It fits 188 KiB on a sheet of letter sized paper after error correction. It does require a laser printer and a flat bed scanner though.
There are HDMI splitter boxes you can get from China that conveniently strip out the HDCP.
At least with TV, you could tape your shows and fast forward through the commercials.
There will probably be a lot more websites with expired certificates soon.