Lightroom running out of memory on iPad Air 4

Hi. I am wondering if others are having a similar issue. I have been using LR cloud on my iPad Air 4 happily for a number of years and always found it speedy and effective. Since the new ai lens blur feature etc came in, I now find the app laggy and slow when editing my Fuji raw files. In fact it has crashed on more than one occasion and said I don't have enough memory (ram in this case). I am finding this pretty frustrating as everything was fine until recently. Is it just me? Do I need to splash out on a new iPad?