Took a little time to make a video the Teensy 4.1 running a couple of the LVGL demos, to give a view of what can be achieved with that library on a Teensy 4.1:
Music player demo on T4.1 with ILI9488 480x320:
https://youtu.be/ueWSo2Kv52M
Printer demo on T4.1 with NT35510 800x480:
https://youtu.be/FdAltf1KfVY
Music player demo on T4.1 with ILI9488 480x320:
https://youtu.be/ueWSo2Kv52M
Printer demo on T4.1 with NT35510 800x480:
https://youtu.be/FdAltf1KfVY