Why is Unreal Engine Editor so heavy and slow?

You’re not the only one. Ever since 4.22, it’s gotten worst. Too much time taking to delete single and simple objects. Substance plugin is now more ■■■■ and unresponsive and makes pc crash. I mean for a 5 minutes work we have to wait 30 minutes, at this rate we wouldn’t be able to complete anything. If this continues, I can guarantee epic n unreal will face serious consequences.