"NameplateOverlapH" and "NameplateOverlapV" cvars are resetting to default everytime i login.
I tried disabling every addon except aio but its still resetting.
Enforce Settings on Startup is enabled. I have tried backup settings and restore settings multiple times but it doesn't seem to work.

Hi,

I was noticing CVars resetting on SoD too. The addon will remove a CVar from its list if it finds another addon modifies it, except the built-in Blizzard tool. Except the pattern matching for the built-in CvarUtil no longer matches some of the filenames in the various WoW clients.

Try the fix in the linked PR (#81) and see if it helps. It has fixed the issue on SoD for me.