I tried everything, even my docking station and the only thing that worked was using the "j5create - USB-C to HDMI 2.1 8K - Space Gray/Black Model:JCC157 SKU:6507870" with my docking station. I had to change it to the 3440, change it to a different one and put it back to 3440 and it worked perfectly. Could not explain the why behind that but just sharing what worked for me because this took up a whole afternoon lol.