Any point in upgrading stock cables for a LPS?

A shielded power cable of sufficient gauge for the amperage involved should be suitable. But, if you have extra "audiophile approved" cables laying around then, why not?  Better yet, if you have both then try each and listen for differences.  Once you have it nailed, have a friend or spouse switch them without your knowledge and let us know what you hear.

I say no based on experience with the Sonore OpticalRendu and the 'audiophile' power supply and audiophile cable they sell for a lot more money (not power cord) I compared this audiophile variant vs 2 other standard OpticalRendu's. I was not able to do a perfect A+B comparison since I did not have 2 identical DACs.

After this experience I am not spending extra on these type of power supply cables.

Yes.

I always say that in audio everything matters, and that’s especially true when it comes to streaming so I’m not surprised people have found benefits in upgrading their PC to and LPS.  But man, we’re really getting into the nitty gritty here. 

@mwh777 I also have a BS Node (N130). The LHY LPS improvement was not subtle.

I'm an "everything matters to a point" guy, so skeptical about spending money on LPS PCs - after all the LPS is supposed to provide clean, linear power right? 

Having said that, I can test this with a broken in PC that I already own, and I will start with the LHY LPS later today and report back.