Check your system AC and DC temps graph from yesterday - if you see peak temps during those times then you can confirm.Saw something interesting in the graphs yesterday. The garage were my Sunsynk inverter is located got rather toasty and I think it derated my PV production at around 11:30 and again at around 12:30. Not a cloud in the sky and I can only think it was heat related on the AC side of the inverter.
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My inverter is in my window-less garage and we were out yesterday during 32 degree cloudless sun/heat - when we arrived back home the garage was like an oven and the inverter fans were going for it, but I never saw any clipping from the panels - I got a perfect generation boob yesterday.
When I am home, I leave the garage door open 100-200mm at the bottom to allow cool air to blow underneath and bring down the garage temp a bit.



