Sounds like your reception of Channel 5 is less than the ideal. Take it to a friends house with better reception, re-scan channels and bring it home and try again.
It's possible that the picture may freeze or pixelate.
Fujitsu Lifebook P727 laptop review
Lightwell software lets you create mobile apps without using code
Best value Mac: Which is the best £1249 Mac to buy
Comment désactiver les programmes qui s'exécutent au démarrage de Windows 10 ?