I did not really modify BPs for a while but mainly created and imported new content into UE4 and did not notice any crazy memory hunger for a while (even with open UE4 editor). But it seems even others had this issue as well: Massive memory leak in Blueprint Editor introduced with Unreal 4.9 - Blueprint - Unreal Engine Forums
What are the exact steps you took before the memory leak started occurring? Can you walk me through what you were doing step by step and how long it took before the memory leak became apparent?
Hello ,
Unfortunately, I can’t say exactly what steps I took. I just played around the blueprints, so I spent all time in the main editor and BP editor. I worked for 6 hours. After 5-th hours I noticed performance problem of my laptop (Core I7 2.4GHz, 16 Gb RAM, NVIDIA NVS 5400M, SSD, Win7 x64) and looked into task manager.
I noticed that any kind of changes leads to increasing memory consumption (maybe this is the clue).
I’ll try to reproduce this issue again.