Hi carf,
Out of curiosity, what project are you using? At startup, the Editor will only load what is needed for the startup level and no other assets. If you’re working in something like the Kite Demo or Elemental, you can expect the RAM usage to increase pretty quickly after opening the main level or opening up any of the larger assets.
12GB of usage is not entirely out of the ordinary with larger projects. Development takes significantly more resources than playing the packaged game that you end up creating.
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