Comment # 39 on bug 1159882 from Michal Hocko

(In reply to Robert Delahunt from comment #38)
> I will install the kernel in the repository in the link.  Please reply soon
> with what specific packages I need to install from it, and/or any other
> information, as I have only ever ran a different kernel than stock twice. 
> "Back in my day" I would compile a static kernel for Slackware-Current. 
> Now, however, I will need a slight bit of coaching.  If this needs to come
> over direct email or text or whatever, please let me know.  I will boot back
> into OpenSUSE LEAP 15.2 and await your instructions while adding the repo.

Installing the kernel should be sufficient AFAIK.