Infuriating LineHandleAdornments

So I have some nodes which I want to connect up using line handle adornments. The only issue is at corner connects it looks like this:

image
image

as you would agree this looks ugly.

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I have a feeling its to do with this code:

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CFrame.lookAt(CurrentNode.Position, NextNode.Position):Lerp(CFrame.lookAt(NextNode.Position, CurrentNode.Position), .5)

I doubt its the best way to draw a line between to points.

like this:

image

A = CurrentNode
B = NextNode

I want to fix this, the corners not joining up perfectly

because it will very much wreck the immersion

and to be honest it looks ugly.

Thanks!

PS: if someone know hot to

change brightness on adornmets that would be swell.

Still need some help with this and fixing this, or if there are any bettwe ways than lienhandle adornments.