Should I use a big sprite sheet or Unity's animation tool?

Questions & Answers
1

I’m making a mobile 2D game and I’m facing a dilemma.

I have the choice between making a big sprite sheet of my two objects (a saw and a tree) interacting with each other (that would need a lot of frames) OR making 2 smaller sprite sheets of my two objects and use Unity’s animation tool to create an animation between my two objects.

Which one is recommended for performance sake as well as flexibility for further changes?

Thanks in advance

2

Definitely two sheets supplemented with movement of objects.

Whether you move stuff via Unity animations or with script is up to you / your needs, but definitely two sheets.