3D support settings

Where are you seeing the problem? Is it bed adhesion? Is it poor finish? I set the line thickness for the first layer to 1/2 th thickness of the normal line. What speed are you printing? I set the speed for the first layer at about half the speed of the rest of the print. What is your infill pattern ? I use lines because the helter/skelter extra motion of the weird patterns gave me some ugly results. How many inner and outer walls are you printing? I add a couple to both. It makes for a stronger result. What filament are you using? Cheap filament can cause feeding issues through the extruder. If you are printing with PETG raise the bed and hot end temps to 80 and 220 respectively for better adhesion. Make sure your bed is dead nuts level. PLA seems to be more forgiving on my Ender 3 Pro than PETG. I print mostly with PETG though because I like the way it finishes better than PLA. PETG holds a setscrew better than PLA. Make sure your bed is dead nuts level. Make sure your first layer is actually touching the bed when it comes out of the nozzle. The first layer should not be perfectly round. It should be squished a tiny bit. Oh, BTW.......make sure your bed is dead nuts level.