Unreal engine 4.21.0 becomes unresponsive if i change the engine scalability settings to "low" or "medium"
I'm also having the same issue, but I let it sit for a couple minutes and it became responsive again. However, after becoming responsive again, the engine needed to recompile ALL shaders (even on a fresh project) which took quite a bit longer than usual.
After letting the engine compile the shaders, I tried flipping through the "effects" quality settings, as well as all other quality settings, and had no issues. I went a bit further by completely quitting the engine and restarting my machine and relaunching the same blank project and had no issues with hang or crashing when adjusting any quality setting.
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