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World Composition, does it take a lot of resources?

Hey everybody, this is more like an understanding question. I am using a 64m² landscape which I can edit without World Composition in no time. Placing Foliage (whole map at once), aplying layers seems to be done within seconds.

But when I do the exact same things in the same map with World Composition (256) tiles it takes forever. Meanign that it takes about 5-10 minutes to apply a single layer... somtimes I even get "Out of video memory". I am wasting so much time to edit the map... it's insane. The original plan was to use a 256km² map, which I couldn't even load all tiles without crashing...(it was 1024 seperate tiles).

So I would like to understand what happens behind the scenese with world composition so I can fix and act accordingly. Leaving world composition behind and just go with one single landscape seems to be not a good idea. With a single Landscape I get about 20-25 % more FPS drop.

My System Specs: 16 Core (32 Thread) @4GHZ CPU 32 GB 3000MHZ RAM 1TB 970 EVO M.2 SSD

Product Version: UE 4.22
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asked Aug 13 '19 at 10:57 AM in Using UE4

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dasschlumpf
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avatar image dasschlumpf 5 days ago

Reducing the Tile count drasticly improves the performance when building / placing etc. I reduced the tiles to 16 in total on a 8km x 8km landscape. Before I had 256. Is this the way to go?

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