every time you make the flow turn a corner you create a large restriction in the flow. Try one of those curly retractable water hoses sometime, it cuts the flow rate to less than 1/2. The curly air hoses or roll back hose reels do the same, don't use them where the flow rate is critical, spray painting, high volume air tools, etc.
Also use as short a flexible hose as you can, stretch it out as straight as possible, don't leave it coiled up while using.