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Slate RT Draw Batches Slowdown

I have just updated from 4.20 to 4.21. On 4.20 my system runs 60-70 fps steadily, but after updating to 4.21 I can't get above 35fps, and it usually sits around 24fps. Playing a game is even worse.


Stat Slow shows that this seems to happen around "Slate RT Draw Batches."

My assumption is that maybe 4.21 is heavier on the GPU and my laptop can't handle it, but I don't think the update should have such a crazy framerate drop.

Does anyone know why it might slowdown like this or know how I could find out more about the slowdown?

I know this might be a very specific question, but I've searched the forums and documentation for 3 days and have come up with nothing.

Any ideas?

Product Version: UE 4.21
ue4statslowfeb1.png (876.1 kB)
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asked Feb 02 '19 at 08:56 PM in Rendering

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