I had to crank the brightness all the way up to make it usable. With the factory default settings everything was really dark. So dark it was hard to see what is on the screen! With the brightness turned all the way up it looks okay, but it seems weird that I should have to max out the brightness like that just to make it look somewhat normal. I updated the firmware to the latest version, but that didn't change anything. Are other owners of this monitor running it with the brightness maxed out too? I am running it at 5120x1440@240hz with HDR enabled on a Radeon 5700XT via DisplayPort and with all the latest drivers and OS updates.