Yep and in Windows 11 you now have premade window placements so if you hover the maximise button you can select e.g. “right hand, one third width” and another program for “left hand, two thirds width” etc. I use it all the time. I do have a second monitor on top of the ultra wide but mainly because it’s a special colour accurate monitor, for productivity I was doing fine with just the one big UW for years.