Firestore is Not Working Well

[loeiks]

When I have a lot of items/documents in a collection queries are being too slow and not even completing just getting error. (No error message flat "Error")

I have tried to change the CPU and MEM settings of Cloud Run service but it didn't change a lot. I can say it's still same. How can I fix this? Should I use App Engine instead of Cloud Run or is it normal to be like that when I have too many items (over 70K) in a collection.

And it would be great to let this adapter support Reference and Multi-Reference field types.