Reviewer records first drop in overall brightness after 21 months of burning in his QD-OLED monitor — but the 2% decrease isn't likely to be noticeable

After 21 months of continuous use, a reviewer noticed a 2% decrease in overall brightness on his MSI MPG 321URX QD-OLED monitor, marking the first measurable drop in brightness. Despite this slight decline, the burn-in artifacts on the monitor have not significantly worsened since the last update. The monitor displays a line down the middle of the screen and burn-in where the taskbar is located, with a slight shift in color temperature. The gradual development of burn-in artifacts over time has been observed, but the overall performance remains acceptable even after 5000 hours of use.