apologies if you you already posted about it already and i missed it, but what software are you using to author blu-ray discs?
there are many options but the best one for all purposes is and will continue to always be ImgBurn.
ImgBurn has not been updated since 2013. This is because it does not need to be updated anymore, unless a new optical disc format hits the market (highly unlikely). ImgBurn does not have bugs. ImgBurn works flawlessy. ImgBurn will run just fine on Windows 10 or 11, but will adorably proclaim itself to be running on Windows 8 in its log window.
ImgBurn has a setting for every possible thing you could want to do with a recordable disc, and gives you as much information as it possibly can, while adhering strictly to the specs laid out in the respective formats' official standards.
ImgBurn is love. ImgBurn is life.
Anyways enough simping for ImgBurn.
If you mean actually authoring discs, like creating menus and building BDMV folders out of compatible AVC video streams, I don't have any software that can do that. I know there's the Big Expensive ones like Adobe Encore or something else that some of the big studios use, and I've no doubt there's good free blu-ray authoring software out there, but I've been too Scared and have no real use for it to go looking. I just know it would take too much time to learn and making good-looking Blu-ray menus from scratch requires graphic design skills I do not have!
All ImgBurn does is burn files to discs or read files off of discs, which is most of what I've been doing.
I use AnyDVD HD for decrypting and removing things like region locks and UOPs from blu-rays, and it has its own "rip disc to image" feature that I use for the heck of it and because it's dead simple (there's 3 buttons: Select Location, Rip, and Close). This gives me a very beefy ISO image in the range of 30-45GB. One annoyance this solves compared to ripping to a set of folders is that the ISO metadata contains the exact point that the layer break occurs, which helps make the copies more accurate to the original (layered discs often hide the layer break in dark or still scenes, or transitions between scenes). [EDIT 3/20/2024: BD-R DLs do not have a defined layer break, this is handled in firmware by the drive during burning and reading and is invisible to the end user.] Then I just tell ImgBurn to burn that ISO to the BD-R DL I have in the drive. Most BD-R DLs are capable of up to 6x burning speed, but as I'm concerned about broadest compatibility (I'm unfamiliar with the playback devices of the people I'm sending these discs to), I set it to the lowest speed possible - which curiously is not 1x, but 2x! Most BD-Rs refuse to be burned at 1x for some reason? Maybe 1x speed was just some like theoretical lower limit that nobody ever actually used.
Anyways at 2x burning speed, a dual-layer blu-ray takes about an hour and a half to burn. Which might sound terrible, but the great thing about burning a disc is that you click the button and then you just walk away and do anything else. Once it's done burning, ImgBurn automatically cycles the tray (which occasionally jumpscaes me if I'm in the room but not paying attention to the burn) and verifies the disc against the ISO. It does this at the fastest read speed it can manage, so that part takes significantly less time. And then it's just Done! I test the burned disc in my PS3 and my Sony X800M2, and then poorly handwrite a label with a sharpie. :3