Sorry for your downvotes. Your comment is constructive on both points.
GrapheneOS is very usable, I've been using it for the past three years or so. Regarding the lunatic part, I thought he resigned as lead dev.
Lineageos is also less stable than GrapheneOS and of course far less secure than GOS. It’s also less secure than stock Pixel OS or any other Android OS that supports verified boot.
Unless you know what the rootcause is, no it won't. If it's a bug or some regulatory issue, that will likely carry over from AOSP to any derivatives unless they explicitly work around it.