Sky Mysteries

Everytime a race starts at Southwell I lose channel 415 -- can't get a signal etc blah blah --- so I quickly switch to watching a young Brian Blessed in the first episode of the Sweeney (currently ch 120). Then I quickly switch back & its no bother. Every race this has happened. I've noticed this on other days but not been too bad of late. There can't be a surge in demand for these pics?....they are 10 seconds behind aren't they? This is new to me but i'd be surprised if somebody on here wasn't familiar with this development.