Classic Outlook Keeps "Not Responding" and freezing

Hi there,

I tried to scour for something similar, but I couldn't find anything and/or it didn't work - so here I am - hopefully someone can help. 
Okay the facts - I use Classic Outlook (CO moving forward) and I run 5 email address in it - 3 are a domain for my company that I run and 2 are POP emails brought in from AOL. I run Windows 11. This is happening to 3 or my 5 work stations, all three are the ones on Windows 11. This started slow a few weeks ago, thought it was just low memory so went through and cleaned up old emails. I am not seeing these issues when using the 2 pop emails - just my company domain ones. Can open CO, taking some extended time but it is getting there. As soon as I try to send an email, reply to an email, change a signature within a new email - it either takes 5-10 minutes to load if we do not click again and just let it sit and think. The second I try and click something or try and scroll while waiting - it goes into 'Not Responding'. Some times it will load after 1 minute and sometimes it just get stuck. I have updated my CO, I tried the advanced 'online repair' through my system, I have tried disabling all my add-ons, I tried deleting my email account from CO and re-loading/logging in, I have checked my graphics card (something on google said to check it for updates), I have ran command prompts to check for internal Windows errors and I have come up short on everything.