Downgrading from mojave to hi sierra

[alaskamama]

I am trying to downgrade from Mojave to Hi Sierra or Sierra. My aged Mac just gets too sluggish with the new Mojave ( I know I'm still behind with Catalina now out). Truth be told, I just don't like how it performs. It was a bit of a fluke and I upgraded w/o realizing that even though my MBP could make the upgrade it probably was not the smartest thing to do. Where can I find the link to downgrade?
Thanks for any input.
Silvia/alaskamama

 

[chscag]

Welcome back. Glad to see you were finally able to log back on.

The best suggestion I can give you with regard to being able to download High Sierra is to try the Apple Store.

Connecting to the Mac App Store

You realize that downgrading is going to require erasing your hard drive so be sure that you have a good backup of all your data and apps.

 

[IWT]

Hi Sylvia

Good to see you back with us.

What you are asking is a big job, takes a lot of time and patience. The first problem is locating a legitimate copy of macOS High Sierra. As our senior Admin said, try the Apple Store first.

This article takes you through the steps for downloading macOS High Sierra: How to Download MacOS High Sierra from MacOS Mojave

These articles give you some idea of how the downgrading process works: https://osxdaily.com/2018/06/18/how-downgrade-macos-mojave-beta/ AND How to Clean Install MacOS High Sierra

The other option is to get your 2015 Mac working properly. It is, or should be, well able to cope with Mojave. (In fact, I think it could even run Catalina?)

So, if you are inclined to do so, maybe you could highlight the problems you are experiencing. I might add that High Sierra/Mojave are not that very different in terms of utility. Catalina sure is though.

Ian