It won’t solve the root problems, but I just recently published a Kodi addon that has some features which can help alleviate some of them.
I made an addon that allows you to configure individual audio offsets based on HDR type and audio format, along with some other seek-back features that help resync the AV stream. For me, I have to set my TrueHD offset to be different than my DTSHD-MA offset. This addon let’s me configure that and not have to manually adjust it based on the video I’m watching.
I’ll link the forum post here instead of double posting everything: Audio Offset Manager — Intelligently manage audio offsets
Currently, it’s only available from GitHub but I plan on submitting to the Kodi repo soon. If you do try it out, and notice any bugs or have ideas to improve it, you can raise the issue on GitHub.
edit: For anyone trying this, I’ve been releasing frequent updates as I prepare for Kodi repo submission. I mainly added an on-boarding process to detect if the addon is on a platform like CoreELEC and has access to amlogic infolabels, or if it’s on a generic platform that doesn’t. I also added a lot of error handling for playing formats that aren’t supported currently. If you experience any bugs, please check for the latest version on the releases page.