Windows 11 annoyances, fixed

• Not getting the full 2560x1080 resolution of my ultrawide monitor (Dell U2913WM) through HDMI, from the laptop to the monitor? 
  
  At first I couldn't just select it from the menu; I had to open that little popup bubble on the right-corner that said, "This device could perform better" or something like that, where it took me to the NVIDIA settings and I was able to choose it.
  
  That was all well and good until I got my Dell D3100 dock and went back to my multi-monitor setup. Moving the HDMI from the back of my laptop to the dock, I couldn't get ultrawide no matter what, so I plugged the HDMI cable into the back of the laptop again and I got it.
  
  
• Can't change from the default Microsoft apps to view pictures and videos?
  
  The old trick of "right-click > Open With > Choose Another App > Always use this app" doesn't work anymore. Neither does the other way Microsoft wants us to use.
  
  Credit to Amdkt7 for this one. If you want to change your default app for images (e.g. IrfanView), Apps & features, scroll down to Microsoft Photos, scroll down and hit both the Repair and Reset functions, and then immediately do that old way of right-click and Open With to choose IrfanView. Similarly, if you want to use Media Player Classic for videos, you would go to Movies & TV and do the same thing.