Tv picture only pixelating on evening?

[BCFC1954]

TV picture okbon all Channels during the day.  On evening Channel 4 and other Channels pixelating.  Engineer been and checked everything on a afternoon bit same evening it started again  ?????

[Tom-W19]

Hi @BCFC1954 

Your post has been escalated to our Community Messaging team who will invite you to a private chat shortly and help you with this.

Just look out for the chat bubble to start the conversation.

Here's more information on how Community Messaging works - https://community.sky.com/t5/Did-you-know/Escalating-a-post-to-a-Sky-expert/ba-p/3711147

[BCFC1954]

Awaiting reply 

Tv only Pixelating on a evening 

BBC  ITV ok

Channel 4 and a few others affected but always says good signal