I found this post. It increased my FPS by about 2x. (Particular the last comment) So now with an unlit scene it almost goes up to 30FPS and 25FPS for a lit scene which is usable.
I’m not sure which bit precisely did the trick. But I think adding the line in the ini file and putting it in full-screen mode. Then reopening the editor did the trick.
You should see your frame rate practically double.
Also don’t let the editor test your graphics capabilities or select AUTO. This will crash the driver.
If you have any more tips for HD graphics cards (not officially supported) then you can put them below! Maybe one day Epic will get around to fully supporting these cards.