+1 on 100 hours
Also, what is your equipment. While, in general, a particular wire will have general effect, it is also very dependent on your equipment. There is a place under your user ID to put photos of your system and ID your components. This will help enormously for us to help you.
FYI. I have used WireWorld Starlight on several of my systems and it never really did anything for me. I have had greater improvements with DHLabs, Cardas and a couple other Ethernet cables. But those are my experiences with my systems.