Studio Display XDR auto brightness fluctuates widely

I have a 2026 Studio Display XDR paired with MacBook Pro M4 Max.

I have System Settings > Displays > Auto Adjust Brightness enable.

This setup is almost impossible to use as the brightness changes significantly with small variation in either the ambient or natural (through the window) light. There are times when the display almost completely darkens (brightness slider goes to near zero) or completely brightens (brightness slider goes to full) with virtually no change in the surrounding lighting. This occurs during both daytime and nighttime. 

This strange behaviour was reported to Apple engineering -- inclusive of supportying videos -- who responded that the monitor is responding as designed and that the extreme changes were caused by changes in cloud cover through the window as the XDR version (unlike the standard version) has 3 light sensors. While I understand cloud cover changes can change the brightness, the change was extreme in that went almost entirely dark!

Would appreciate feedback from others whether their displays have the same sensitivity so I can determine next steps as I need to get this sorted.

Thanks in advance.