https://wccftech.com/quantum-error-moves-to-unreal-engine-5-shows-new-trailer/

Indie developer TeamKill Media announced that its horror shooter game Quantum Error has been officially moved to Unreal Engine 5. The studio had originally planned to stick with Unreal Engine 4 and shift to the newer version with the sequel, but the plan changed after they actually went hands-on with UE5.

Between YouTube comments and Twitter replies, they explained the Unreal Engine 5 already made Quantum Error much better in many regards even while they're still learning it.