DSM 7 - Memory leak

It appears that DSM 7 has a memory leak. Or it measures RAM usage differently than DSM 6.

With the NAS rebooted and during around 24 hours the memory stays around 25% (normal for my use case). It caches the extra ram like it always did so nothing out of the ordinary.

Fast forward a couple of weeks and the RAM usage is now at >50%. Every day it goes up.

Did you guys experience this? I know that 7 uses more resources but it keeps adding up.

416play with upgraded 8gb RAM. Running a handful of 1st party apps. Third party in docker.