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Lighting needs to rebuilt

Hey everyone. I'm still kind of new to ue and i'm facing a weird problem in my first project. When i build the lights every thing works perfectly in any session i open But when i do so in a specific project the cpu usage jumps only to almost 25% and the memory usage(ram) jump to 100% After about 15 mins the build is done but the message is still there "LIGHTING NEED TO BE REBUILT(728 unbuilt objects) I'm using a core i7 7700 cpu 3.6 ghz 32 gb ram Gtx 1060 6 gb I've been searching for almost a week for an answer but nothing

I figuered out one last thing. I tried to delete the meshs in the same project and the lighting build process worked perfectly. When i don't delete the meshs the "building lighting" process get stuck on 0% and then finish sudenly maybe cancel by itself i'm not sure.

Product Version: UE 4.22
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asked Aug 12 '19 at 06:43 PM in Using UE4

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kinslayer999
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