Direct answer
Evening-only buffering points toward shared network or provider congestion more than a defective TV. Compare speed and latency at the failing time on the same device and another device.
What this covers
- The observed symptom matches this record
- Customer-accessible settings, connections and external components
- Diagnosis before reset, deletion or component replacement
What it does not cover
- ×A model-specific error code with a different documented meaning
- ×Internal electrical, battery-cell, gas, refrigeration or sealed-component repair
- ×A guarantee that every model exposes the same control label
Capture the exact symptom
ReversibleNote the exact time, app, resolution, Wi-Fi signal and whether every service slows.
Run the smallest isolation test
ReversibleTest Ethernet or a nearby Wi-Fi connection and compare another service and another network at the same time.
Correct only the proven cause
ReversibleReduce simultaneous traffic, improve the local link, or give the timed evidence to the internet provider when the slowdown affects all devices.
Verify before changing anything else
ReversibleRepeat the same title and resolution on two evenings after the change.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What should I check before resetting anything?+
Note the exact time, app, resolution, Wi-Fi signal and whether every service slows.
What is the safest isolation test?+
Test Ethernet or a nearby Wi-Fi connection and compare another service and another network at the same time.
When should I stop troubleshooting?+
Do not factory-reset the TV for a repeatable time-of-day network slowdown.
Answer for the exact device and software version shown above.