Yeah i get the freezes too in CE but thats just the game loading and unloading areas of the maps i've also figured out that long freezes are just maps loading and short ones are enemies loading unless, like the Death Widows in the Forbidden Lands they swarm you ( I really hate when they do that) other than the bees they are the only things that can out run you on foot .
as for the athena bashers i usually throw a few whirlwinds at em that pretty much finishes them off
as a matter of fact i havent run into any thing that can withstand 4 whirlwinds
except for mabye the few enemies that arent stupid enough to try to run through em Like the widows theyll wait for the whirlwind to dissipate before running you down