Unreal Engine 5 Preview 1 has awful performance compared to Unreal Engine 5 EA2

I have no idea why, perhaps we can figure it out together.

Honestly for me it’s the complete opposite. As with anything UE5, everyone has a completely and wildly different experience. UE5 EA1/2 for me were terrible, borderline unusable. “Building Cards” was the worst thing I could see when loading a project as it could take well over an hour for that to finish. Performance was also pretty abysmal with Lumen enabled. Preview 1 runs great for me though, I’ve had a solid 60fps, hitting my target perfectly in my personal project utilizing Lumen w/ hardware ray tracing enabled.

Well that’s good for you. On Discord people say its because I have lumen and virtual shadow maps on in Preview 1 and that’s hurting my performance but that is incorrect as EA had them on as well.

I also experience significant performance improvements in Preview 1…which was one of the main reasons to move on to the newer update. I think most others are as well, so it’s unusual that your performance is worse. What system are you using?

You are correct about virtual shadow maps and lumen, EA also had them and they are enabled there by default.

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Hey, my apologies I wasn’t trying to gloat or sound like a jerk. On EA1/2 a lot of my performance problems were directly related to virtual shadow maps. Turning them off eased quite a bit of it, the rest was from Lumen and Nanite. Turning those off and EA1/2 would run exactly as UE4 did for me.

What are your system specs?

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No your fine, I was not meaning anything by it ( I kinda worded it badly) and I was actually happy to hear it was better for you.

I have the M1 Mac mini (In the future I do want to upgrade) as that is all I could afford at the movement and I don’t need amazing performance as I mostly do programming stuff 99% of the time but losing that much is very worrying overall regardless of specs.

M1 Mac mini.

So I did a new test using time of day scene and the performance is better in preview 1. So template projects and levels I made prior are performing worse. Very weird.