was trying to play stadia with my ps4 controller connected via Bluetooth and the latency is about 1 second late, maybe more. unplayable. wired tho its good enough to play with no problem. i would like to know if this is common even with the more expensive android tv models or if this is the trade of of buyin a cheap android tv?
Yes, it's a common issue that was fixed in a recent Android version (9 or 10 I think). I have to use a wired connection on my Philips Android TV, I was holding off replacing it with a newer TCL until they reached Android 10.
You can also fix the problem if you have root access.
What version of Android is your TV running?
I also have the same problem I'm using ps4 controller with the light bar on top + tcl 43ep660
I have a DualShock 4 V2 and a Xiaomi Mi TV Stick, i could play on both Stadia and GeForce Now with a "Generic" Gamepad: a Terios T-3. And i was unable to connect my PS4 controller via Wired Mode (Bluetooth Only, it was a Streaming Stick), and i tried to connect my Android TV via USB OTG to a 4-Port USB Adapter, and the adapter to a Universal Charger, set the Voltage Level up to 9 and my Xiaomi Mi TV Stick...
Bricked
I remember this being an issue with the V1 controller. The V2 (CUH-ZCT2, with the light bar on top) works fine for me. I’ve got one of each, but the V1 is pretty well unusable wirelessly on my TCL.