Apex won't close, after exiting to desktop

Thank you for the detailed replay, this however has not resolved the issue. 

When running the cmd command: 
wmic process where name="r5apex_dx12.exe" call terminate
cmd returns the error " 'wmic' is not recognized as an internal or external command. operable program or batch file."

I attempted to use the batch file method as well this did not help either. 

I must note I am using Windows 11 if this affects the command? 

I have changed the defualt program type for EasyAntiCheat_EOS.sys to 7zip as asked but this has had no effect as well.