After a few hours of exploring Internet links and experimentation, it seems evident that the Line-Six brand 20ft. VDI cables are problematic. Type "Variax VDI Cable Issue" into a search engine and encounter a well documented you-tube link that demonstrates an issue that the company should take care of. Why does the short ethernet cable sent with the guitar work totally fine for VDI connection, while using the long line-six cable contribute to sonic havoc?
Line Six has known about this issue for some time, and I have spent a lot of money. Please fix it Line Six; take care of your consumers.
Thank you.
