4.1 Update not stable/very laggie

So, all the way up to Unreal Engine 4.0.2, my frame rate was very high up, and my quality was very high too, but now that I updated to 4.1, I can’t even use the engine! I don’t understand why, when I launch it, and open up a project, everything is so laggie, that I can’t do a thing. It is definitely not a problem with my computer, as I do by far meet the system requierments, so what’s the problem?

I have the same problem I’m looking for a solution for 12 hours and I haven’t got any thing

Hi everyone,

please go here for a fix, closing this as a duplicate: