I am running 2 external 27" 4k HDMI displays (LG 27UK650_600) with no problem on my M1 Macbook Pro. I am using them either with the Macbook closed or with all

I am running 2 external 27" 4k HDMI displays (LG 27UK650_600) with no problem on my M1 Macbook Pro. I am using them either with the Macbook closed or with all three screens at the same time. One of the monitors is connected using built in HDMI and this one works super stable. The other is connected through Belkin adapter that I bought from Apple. It sometimes experiences problems (it shows noise) and has to be disconnected and reconnected. This usually happens only after the monitor has been turned off for the night but the laptop was on (I keep it on due to various experiments I am running). Overall I am super happy.