I bought a Philips 55pus7304 recently, it's a decent TV for the price and comes with Android TV, the only problem is that sometime just grind to an halt, with sluggish apps, the interface lags and streaming it's not consistent.
The problems seems related to the 2gb of ram, one solution I found useful it's to disable Google Chromecast in the system apps and disable Google assistant, I have a Chromecast Ultra and a Google mini to do the same job and the TV finally has started to behave properly.
You can also go into developer mode and restrict the amount of background apps that can run as well. It helps a little.