Mail - Mavericks - Groups

Question

Very difficult/slow to send mail to Groups since upgrading to Mavericks 9.1 
Multiple Discussions about this in these Discussion Groups - obviously affecting a large number of users -  but no definitive solution that allows the ease of use seen with Mountain Lion --> Drag the Group Name from Addresses/Contacts into the To/CC/BCC fields & it worked --> it no longer does under Mavericks.
And suggested workarounds are slow/clumsy/Windows-like  to say the least.
Does anyone have a sense that Apple is aware of the many concerns about Mail since Mavericks came on board?
Has anyone found a good solution?
Thanks!
...John 

Answer 1

I do note that:
Mail --> New Message --> Open Addresses
The Groups appear in the 1st Column, Individual Names in the 2nd & Email Addresses in the 3rd
Click on an individual name & the TO / CC / BCC buttons are active
But, clicking on a Group Name (if no name in the Group is selected) & the TO / CC / BCC buttons are grayed out.
You cannot add a Group name to the TO / CC / BCC fields in your message by double-clicking or dragging it from the Addresses.
And things really slow down if you type the group name into the fields - with unreliable & inconsistent results .
Any thoughts?
...John