At least until the memory leak with names that are too long is fixed, can you please require that any BP in a pack have no tabs aside from Viewport and Event Graph open? Just opened a BP from a marketplace pack and in the time it took to load the BP and close the tabs UE4 is holding 3GB of my RAM hostage. For those not in the know there is a confirmed bug where if you have a tab open with a name that has to be cut off due to size, it causes a memory leak. UE-21203, I believe. You can confirm this by simply opening a BP and naming a function a long name. Watch your RAM.