I can tell you more about the light show then ...
...the performance, (which was quite intense indeed, probably the best I've ever seen at a Grateful Dead show, given my first show being in '76, and since they seldom put as much emphasis on this after the early days, with this one being a huge exception)! But obviously, there is no video record of that as far as I know.
By the way, I'm usually personally more interested in the music, no matter how good the lights are at any concert,
i.e. hypothetically, a performance was poor but with fantastic lights, I'd still say the show was poor. Or if one could choose, but only between a poor performance with great lights and a good, or even mediocre performance with little or not much of a light show per se; I'd definitely choose the later! Having said that, obviously it may imply this was probably not a good show; on the contrary it was quite a good performance also. Not the greatest I've seen but pretty good!
Extremely unfortunately, for me this date conjures up more memories of lingering negative stuff personally, thus obscuring what if I as a descent performance. Although, again relative to the many others I attended during this era, which I've heard more of on tape than this one, I'm slightly hesitant to jump out on a limb saying this music is as good as the lights.
(As I've stated elsewhere several times, most of my recordings are in storage besides those that were stolen or I only heard as someone else's copy, this falling into the last category if I got a copy it was shortly before I had to put them away).
In any case, given the set list, at the time I was pretty happy with it. And most certainly, it was as an alternative to the afore-mentioned surrounding circumstances, (that we all have in our own context from time to time), quite welcome! Therefore I'll give it a 4.