Weviz uses the different materials applied by Solidworks to your model to identify the different parts. On each part, you will be able to drag’n’drop a Weviz material.
Unlike in rapid prototyping, low tesselation provides the best results in VR.
To set the tesselation level :
Remove all useless objects from your export. If you want to validate the exterior shape of a design, it would be useless to import all the machinery hidden inside !