I really do love Costco in general, but this location in particular is always busy. It varies from annoying to just a total zoo. My most recent visit was of the zoo variety, and I'm simply going to avoid this location any time I can.
On top of being busy, Costco then chooses to have those food sample people standing around not only taking space, but stopping people who then hang around eating. Ugh, it made the busy environment totally impassable in places.
The experience was so terrible that I ended up leaving with less than half of what I intended to buy.