Dryer tripping the GFI

[jilllagiglia]

After running 2-3 loads on the medium heat setting, the dryer is tripping the GFI plug it is connected to. I have already cleaned all of the lint out of the unit using a shop-vac and have run a camera snake through both ends of the vent to check for clogs, of which there are none. The dryer is located in a utility room approximately 5’x7’ and does not trip the GFI when the window in the room is open. Is there anything else I can check to fix this, or do I just need a new machine? Thank you for your help