Burning discs at 4x or slower speeds

One thing I was planning to do what's to burn Sega Saturn discs using CD-Rs

A particular device for my Saturn the pseudo Saturn Kai requires the disks be burned at 4X or slower because these are data discs and you can't use approximation like you can in music because the information is pure digital code.

I tried burning a disc on the Apple OS default disc burner and it only has a minimum speed of 10x which is way too fast for this app.

Does anyone know why I could burn discs at 4X or slower.

I noticed I could on a program called toast DVD however Toast DVD would not accept my .bin files because I think Toast DVD only handles movies.

I remember there were two other parts of the toast suite which could be bought separately. One was Toast CD for music and the other one was Yoast something else for data.

Which of the two portions do I need and why can't I find either on the App Store anymore, but I can find Toast DVD which I already bought already in the store.

I need some help getting access to one of the other two parts of toast but that's only a store bought feature but the store is sold out.