There is a solution for Toy Story specifically -- the Laserdisc version. If I'm not mistaken, the laserdisc was digitized from the 35mm print.

Toy Story is the only Pixar movie ever released on Laserdisc (along with all their shorts, in the same box set). Disney also released a lot of their 90s animation on Laserdisc.

So if you're a true cinephile, seek out the Laserdisc versions.