Yup.

You generally don't want a smart tv you can hack. You want a decent computer you own sending signal through the external inputs.

The SBC in the TV is, hands down across basically every "smart" TV I've interacted with, a cheap piece of crap (even well into the "expensive" brands and models).

Manufacturers stick the absolute cheapest garbage in there that can output the advertised resolution during playback without stuttering.

So you can spend hours/days/week wrestling this cheap, underpowered board back from the manufacturer... or you can just side-step it entirely and spend much less time and effort sticking a decent computer you own behind the tv.