Greetings,  I've been having issues with my SHARP AQUAS 67" and a VIZIO 37" Flat panel buffering, intermittently, usually prevalent during peak viewing hours, weekdays 5-10, Weekends on and off all day.  While PC, no disruption noted?

Now I've rebooted, ISP provided Modem, I've checked my Deco_D303 (x2), confirmed firmware update (v 1.2.5 B:202240805 el. 752850), rebooted both.

I've contacted ISP, they're sending out a field tch, (all he'll do is check connectivity from their own equipment (they own Modem) to service junction.

my problem here is what to believe?   TV Wi-Fi going on the fritz?  ISP MODEM on the Fritz?  Cause, (final hint), TVs 1. a SHARP (10 yrs old), the other a VIZIO (2 yrs old) appear as only Wi-Fi receivers impacted.  The older SHARP does have a ROCO connected device via HDMI and is powered separately.  (I've rebooted that as well, and check for firmware update, yadayadayada.)

What the heck is going on?

Will see if ISP SVC TCH visit comes up with anything before I make a decision (New Wireless router?)

ideas, thoughts?

Thanks