What we really need: Clear, speed of activator, temp in garage, size of compressor (HP and Tank size)
Type of gun and tip size.
Popular starting points for this problem:
Tip not a 1.4.
Air pressure at wall is not at least 120#
Air pressure at gun is to low with trigger pulled, normally depending on gun and cap size 24-34.
Gun fluid adjustment to far out 2-3 turns out depending on tip size.
If your a new painter, not holding newer type guns 5-6 inches from panel.
Internal gun strainer is still in gun.
Give us info and we can fine tune you from here.