My advice is to find your limiting factor ligs/tunica/septum and concentrate on that area combining several exercises and keep at it for 1-2 months.
I’m sure many of you know I am anything but a hard gainer. But this is only because I follow the above advice religiously. Find your limiting factor and attack it.
Don’t do something because everyone else here is doing it, do it because it is what you need to do.
I know it sounds dumb, but it seems to me that many guys are simply not doing this.