I find this episode very difficult to watch, but not for the main plot; it's Deanna that gets me.
I don't know if it was intentional (probably not due to when this was made), but Marina Sirtis portrays a sensory overload as perfectly as I've ever seen on film. I'm autistic, I've felt that feeling. Even if Sirtis had little awareness of autism at the time I'll bet whoever she used as research / reference suffered with it, whether they had an official diagnosis or not. She nails it perfectly; the way her response to stimulus builds from her looking just a bit distracted, to uncomfortable, to rattled, to screaming, to meltdown; the way she becomes clearly disorientated, the pain and desperation on her face, the need to stay grounded in her room. Been there. Have spent 30+ years learning to hold that feeling in for the comfort of others. Been accused of being oversensitive or histrionic or just plain nuts when my barriers break and it comes out anyway. I can imagine some people would apply that assessment to Sirtis' performance as well, but that says more about their understanding of what's going on. Personally, I applaud her very, very much. Doesn't make it any easier for me to watch though.
I'm 8-starring it. I loved her performance, I'd max it for that, but I barely recall the rest of the episode in comparison so I can't really. There was a really nice looking matte painting when the away team landed - that stuck out. The rest of the reviews suggest that it was good overall, so go by those.