Reduction in system overhead

I've mentioned before that I seem to have a massive overhead of 6-7kwh per day - I do have a big 20kw 3phase system but that still seems way over the top to me.

On 15/9/25 I had a partial power cut (one or two of my 3 phases went down) - my system got into a very confused state so I had to manually reboot everything and all then seemed fine...
Very strangely, since then I've noticed my overhead is down at 3-4kwh per day!
So I'm wondering:

1. did the power cut/reboot fix something?
2. purely coincidentally to the power cut has there been some update to improved the efficiency and/or measurement?

Thanks in advance

Ian

[aside I would have expected the inverter to island the house if any phase goes down but it didn't - my installer has asked GE about this but not got a reply!]

I noticed that my AIO appears to show a 50% reduction in overhead if I reboot it after it's been powered up.

I don't know if that's real or just something in the reporting because after I first noticed it the first thing I do after starting it up is a reboot for that very reason.

If I trust the stats my overhead is about 60W under very light load but shows as double that after first being powered up.

Interesting, thanks ... can't immediately think what could cause that... but let's see if any others have ideas ... perhaps even GE...