According to this thread ( Unity and macOS 10.13 (High Sierra) ) 2017.1.1p3 works on APFS and it does not contain any interpolation errors (issue 971056)
I am currently on High Sierra and 17.1.1p3 and everything works fine so far.
(My Mac has a fusion drive (not a single SSD), so it didn’t auto-update to APFS yet anyway.)
But @dri_richard is right, the whole LTS-project does disappoint in its current form