Keep having memory issues even after deleting documents and uptiering to M2

MongoDB kept returning all kinds of 8000 errors when I got to 512MB/512MB. So I deleted a bunch of documents and things starting working again.

Same thing happening again, even though I believe I’m at 330MB AND i just upgraded to M2 with 2GB.

Here are my stats:

Database Statistics:
db: test
collections: 18
views: 0
objects: 19800
avgObjSize: 339.2477272727273
dataSize: 6717105
storageSize: 162074624
totalFreeStorageSize: 0
numExtents: 0
indexes: 31
indexSize: 324276224
indexFreeStorageSize: 0
fileSize: 0
nsSizeMB: 0
ok: 1

Any idea what’s going on?

Hi there, let me reach out to you over DM as I need more information about your cluster