What am I able to do in German these days? I’ll tell you.
Take any chapter from any Harry Potter book with which I’m familiar, but which I have never yet looked at in German. I’ll be able to read and understand it. And I go about it in an interesting way.
I set up the German script on the left of the screen. I set the English script up on the right (just to glance at now and then). And then I listen to the audiobook, letting it play without pause.
This works beautifully, and it’s absolutely no strain.