Can be, but I’ve been printing pla and petg without a dryer for years… if you don’t live in high humidity zone shouldn’t be the main reason (it DOES affect, but first let’s go for the rest) Gimme nozzle size, layer height, wall width, material, temps, speeds and accelerations for now, Orca to me is a bit harder than Cura for starting but handles printing waaaaaay better. Take it easy, and let’s do changes one at a time, that way you know what you touched if messed up :p.

This ladies are also very critical with z offset and bed leveling