Sounds like you watched it too much, know it by heart and no longer feel engaged. I have sort of the same with Aliens. I get more kick listening to soundtrack because it brings back memories.
I did rewatch T2 for the first time in 10-15 years recently and witnessed again how perfect it is. Cameron is Hollywood's most underappreciated screenwriter. T2 has the perfect 3 act structure where story is entirely character driven. There's an encounter with T-1000 in each act and last two are completely avoidable. Characters could chill somewhere out of danger, but John's guilt over not believing his mother motivates him to go save her putting him in danger with T-1000, and third acts plot twist is Sarah going after Cyberdyne. In a poorly written movie it would seem like characters act stupid, just to engage in more action scenes, but not in T2. So you can dislike 90s time capsule catchphrases but characters are completely believable, it's a sign of good writing.
Also, just in general the sense of purpose of each action scene and slow escalation of it is what makes Cameron movies work. You forget you're watching a movie. Perfectly paced and executed film.
Don't know which SFX you consider dated. There's only about 30 seconds of CGI and they even used prosthetics for some liquid form T-1000 scenes. Unless you zoom in to check stuntdouble faces there's nothing dated about it.
