The Q461 is a radio powerhouse. The 5G modems generate serious heat. The aluminum chassis acts as a heatsink, but if there is no airflow, the CPU throttles the encoding chip to prevent damage. The device doesn't tell you it's throttling; it just drops frames.

""" UCAST v461 Protocol Hotfix Resolves: Frame desync on high-latency links, Integer overflow in sequence numbering Author: Systems Team Date: 2024-11-14 """

Navigate to the TV's application settings, select "Show System Apps," and clear the cache and data for "Google Cast" or "Chromecast built-in".