Hi, I compiled Spine and updated my project to Unreal 4.22.2 (I was using 4.19.3) and noted that the Unreal Editor was dragging the whole system. After some tests, I realized the problem seemed to be the Spine Objects.
I'm using streaming levels and moved all spine objects to a single level (I have 25 objects with a spine component in that level, 2 different spine jsons duplicated). When the level is visible, the RAM consumption by Unreal Editor starts to increase, starting in 850MB and consuming up to 5GB. Whenever I hide this level the RAM consumption stops increasing (it doesn't decrease though, I have to force close the editor and run it again to start again at 850MB). I'm not running the game, just the level editor, with NO spine animations running on any of the 25 spine objects. Not doing anything, not even navigating the level, just the editor running with the level.
There's no need for any of the Spine objects to be visible, not one of them, in order for the RAM usage to increase.
I had the very same project/level in 4.19.3 with a regular RAM usage.
Unreal Editor: 4.22.2
Windows 10 64 bits
Spine runtime compiled two days ago (June 5)
Thank you