We’ve been using Asda for home groceries for a few years now, we pay £6.50 a month for as many deliveries as we want as long as they are over £40. I’ve gained a lot of experience and knowledge. I think your problem is the delivery time, if you order is being delivered at 8.30 it will be picked at around 6am, a lot of the shelves will still be empty. I’ve just had my delivery in the last hour and there were no subs. I’d say best time for delivery is around noon.
That said, I have had many issues with items being out of stock for delivery but on the shelf when I go in store, sometimes it’s just lazy pickers. Try Sainsbury’s they have a similar priced delivery pass and they are cheaper than Asda on a lot of lines now, especially meat.
Enyaq EV