![Waveshare Raspberry Pi 4 Model B 8gb Ram 64-bit 1.5ghz Quad-core Processor 4k High Resolution Dual Displays Bluetooth 5.0 - Demo Board - AliExpress Waveshare Raspberry Pi 4 Model B 8gb Ram 64-bit 1.5ghz Quad-core Processor 4k High Resolution Dual Displays Bluetooth 5.0 - Demo Board - AliExpress](https://ae01.alicdn.com/kf/H3712bb0907ed44cdb5c0cb49f5f3eeabE/Waveshare-Raspberry-Pi-4-Model-B-8GB-RAM-64-bit-1-5GHz-Quad-core-Processor-4K.jpg_Q90.jpg_.webp)
Waveshare Raspberry Pi 4 Model B 8gb Ram 64-bit 1.5ghz Quad-core Processor 4k High Resolution Dual Displays Bluetooth 5.0 - Demo Board - AliExpress
![1/4 of screen shown on 4K tv. I'm using raspberry pi 4. I changed resolution from “device choose” or whatever, due to slow down, to 1080, but I get this. Thanks in 1/4 of screen shown on 4K tv. I'm using raspberry pi 4. I changed resolution from “device choose” or whatever, due to slow down, to 1080, but I get this. Thanks in](https://i.redd.it/debq6cql75d71.jpg)
1/4 of screen shown on 4K tv. I'm using raspberry pi 4. I changed resolution from “device choose” or whatever, due to slow down, to 1080, but I get this. Thanks in
![I actually verified the problem of `` Wi-Fi becomes unstable at a specific resolution '' of Raspberry Pi 4 - GIGAZINE I actually verified the problem of `` Wi-Fi becomes unstable at a specific resolution '' of Raspberry Pi 4 - GIGAZINE](https://i.gzn.jp/img/2019/12/06/raspberry-pi-4-wifi-problem/00.jpg)