Assemblies Options
Set options for normal use (with Large Assembly Mode off) as...Disables automatic save of your model. (Set in Backup Options for normal use...
SolidWorks Fundamentals > Options > System Options
Sketch Options
To set a low transparency, click Tools Options System Options Performance and clear High quality for normal view mode
Performance Options
... when Large Assembly Mode is on.) High quality for normal view mode. While the part or assembly is ...