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We are having the same issue. Just started after 2 months. Is there a solution?
I was told reset tv
i requested new remote, also upgraded firmware
tyis didn’t work so I requested a new tv. All is good now
Try disconnecting the tV at the mains plug. In addition re-boot your router and any extenders devices. This instantly cured the problem. (An observation - seems to have started after purchasing Google assistant. )