I purchased a Kindle Scribe (discounted).
I consider it a good reader, but a bad note-taking tool. I use it to read books without distraction. Sometimes I use it together with the Remarkable. When I need something more powerful, I use my convertible laptop.
I had the same problem (I posted it some time ago). At the end, the problem was in the video driver of my Intel Iris Xe graphic card (built into the CPU) installed by Lenovo. I update it using the driver downloaded from Intel site and the problem disappeared. Now it works like a charm.