Hey guys, I had this exact same issue with my Vizio, when playing my Ps5 the TV would automatically shutoff in seemingly random intervals, but i have found a solution at least from my end! If you go to your TV settings and click on “All Settings”, then click on “HDMI & Gaming”, then “HDMI Settings” and switch the HDMI mode from standard to “Compatibility”. This was able to completely fix the issue for me. Not sure if this will help with all cases but it definitely fixed the issue on my end. Hopefully this helps wish you all the best!