Fill time-Animation

If the injected volume is less than 95% of the part's volume, it may result in insufficient holding pressure, which means some areas exhibits shrink marks or material shortage. 

Weld lines

The length of the weld lines should be shortened, the quantity should be minimized, and the weld lines should not be placed on load-bearing surfaces and structures.

 Deflection, all effects : Deflection

The main factor affecting deflection is the shrinkage of the material, too large a deflection can lead to the product not achieving the requested size.