Read the instructions that come with the sprayer-prep the room-you shouldn't have any problems.Lot better then a paint roller.
Not a Painter
used to much paint, hard to under stand the direction, went on line to watch beginners video. Used 2 gallons on a 10x12 bedroom, only got 1/2 of one wall done and 1/8 ceiling, 1/8 of another wall done. that's it.. lot's of overspray. And paint ran on the wall. I followed the directions to the T (I'm thinking I did ) or .... It just may be users error.. from my point of view it was loud and hard to understand... but what I did get painted it was a good job.... that's why I'm giving it a 4.