Hey !
Does this occur in a clean, blank project with no additional content or is it limited to one project?
Yes, it occurs in all projects.
What steps can I take to reproduce this on my end?
This is a good question. I just create a blank project, create a blueprint and start to add nodes. It is nothing I do more than that to reproduce that.
Can you post your full dxdiag here so I can take a look?
Sure, here you go.link text
Have you updated to the most recent drivers for your R9 290?
Yes. I always do
Have you checked to see if the memory was steadily increasing in the task manager while in use?
Yes I checked and tried, if somewhere something else stack the memory, but no nothing else do it like that. It is only if I click the right mouse button and add a node. (I am sure I dont try ALL, but all I saw in the first place)
Does the editor eventually crash if left alone?
No, it never crashed. The editor just want to set the settings down, because I got less than 10 fps for more than 80% in 30 seconds.
Do you see any error messages or warning?
No, I cant see any error or warnings.
Does this seem to occur with a specific node/node combination or is it when you use any blueprint nodes?
Any blueprint nodes.