OK, I've given it as thorough a test as I can:

I've opened TV Shows section, scrolled slowly to the bottom, slowly to the top, repeated three times. Closed app and redid. Scrolling TV shows is still almost unusable (50 shows listed).

Did the same thing for Movies. Scrolling usable after about the second load, but still jerky/laggy compared to 1.1. But it's definitely usable.

Turned thumbnails off. Surprisingly, TV shows is still unusable. While TV shows, `top` shows the process is using around 80-90% CPU. Scrolling Movies at around the same "pace" uses around 45-50% CPU. (130 Movies listed).

Reinstalled 1.1.0. Scrolling TV shows, even while it's loading the thumbs, uses around 60% CPU.

One thing that could be causing the issue is one of the TV shows has no thumb? (in all versions).

Any more tests you want me to run?