Skoda Octavia mK III INFOTAINMENT system keeps switching on and off

Hi guys and gals. Not posted on here for a while as my 2016 Skoda Octavia estate, has been issue free since I bought it 6 years ago. Just recently though, the infotainment system has been playing up. It switches on no problem, but takes ages to load from the sd card 2 where I store my music. It also turns itself off and on when I am driving, meaning that I have no sat nav. This happens every few minutes now, but it turns itself back on again straight away, only for it to repeat the same operation minutes later. I have checked YouTube and performed the reset by pressing and holding the on off button until it switches itself back on, but it’s still doing it. It’s driving me crazy. Any advice would be most welcome. Cheers Skiprat.😉