The battery drain seems to have gone on OneUI 4.1. When I was running One UI 4 I would be down to 25% by 4pm at the moment at 4pm with OneUI 4.1 I am at 51%. This morning when I switched my phone on at 7.30am I was at 90%. So it does seem that the battery drain has gone. There is no juddering on the lower rate on the A52s and it feels like I have my phone back to the way it was when I got it out of the box. I hammer my phone as it is used constantly through the day.