Since when did the orders take so long to fill?

I remember when I first start using this service my orders got filled very quickly, almost instantly, now sometimes it could take up to minutes for it to sell my order, I was at a profit when I pressed to sell, then when I come back to check my history I was actually down because it took so long to fill.

it really depends on what you are trying to sell. when I sell it takes me less than a minute on market orders for the same or better price than I was expecting and limit orders trigger as soon as there is someone willing to buy at/above my price.