this a problem with your casting connection and nothing wrong with BT sport I often cast Bt Sport and never have a problem
If you go into the play store on the tv there are always updates for the chromecast. There is on my Sony android tv anyway. Also I find my tv benefits for a reboot every once in a while not just standby on and off. If you hold the tv power button down on the remote until restarting come up. Sometimes that can help.
@imjollywrote:this a problem with your casting connection and nothing wrong with BT sport I often cast Bt Sport and never have a problem
Same here. I found that I needed to use the small extension lead that came with my Chromecast dongle to get a reliable connection rather than plugging the dongle directly into the TV itself. That my sub-woofer is sitting nearby on the same side of the TV may have something to do with it.