b) most annoyingly, some android TV devices (e.g., nvidia shield, ccwgtv) use renegotiation instead of VRR for framerate matching. The FO48U supports VRR from 48 to 120Hz, which is more than enough to do framerate matching even with blackframe insertion for all desired framerates, but many android TV devices renegotiate instead. That means pressing play on Netflix takes 7 seconds until it starts. Quite annoying.

Still, it's preferable over TVs with shitty built-in OSes.