On one Google TV Streamer, Bluetooth headphones were roughly 200–250 ms late in Netflix while YouTube remained in sync. The usual sound settings did not fix it.
The evidence pointed to Netflix using Android's tunneled playback path over Bluetooth. On this device, that path used hardware A/V sync, and the observed behavior was consistent with the headphones' presentation delay not being compensated correctly. Adding Netflix's own platform capability below forced non-tunneled playback over Bluetooth:
"tunnelModeWithBTSetting": "disable"