Windows 11 Problem, Can't switch from COH to running MS Excel page

[Skywise]

Greetings heroes.  I'm a retired ex-engineer nerd who is loving having more time to play COH.  I'm a confirmed altaholic with over 300 toons (after deleting a couple of hundred recently).  So one thing I do to keep them straight is I've created a massive Excel spreadsheet to keep track of them with graphs and tons of formulas.  I usually open it, pick a toon to play, then launch HC.  I play in fullscreen.  After something changes about a character (usually leveling or new powers) I use the windows key to switch to the background Excel sheet and update them.  Then back to the game.  Worked great in Win10 but since going to Win11 I usually have to hit the Excel taskbar icon 2-10 times to get it to switch.  It doesn't do it if opening a program, including Excel, only if the program was running in the background.  Anyone else have a problem like this?  Any suggested fix?  C'mon, I can't be the only total nerd on here.