# Landscape layer blend weightmap - video ram usage

**URL:** <https://forums.unrealengine.com/t/landscape-layer-blend-weightmap-video-ram-usage/438766>\
**Category:** World Creation\
**Tags:** ram, unreal-engine, question\
**Created:** [December 3, 2018, 2:42pm UTC](https://forums.unrealengine.com/t/landscape-layer-blend-weightmap-video-ram-usage/438766 "2018-12-03T14:42:11Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Czaja](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Czaja](https://forums.unrealengine.com/u/Czaja)\
**Post date:** [December 3, 2018, 2:42pm UTC](https://forums.unrealengine.com/t/landscape-layer-blend-weightmap-video-ram-usage/438766/1 "2018-12-03T14:42:11Z")

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Ram usage goes through the roof a UE4 crashes when I try to import weight maps onto my fairly big landscape (8129x8129 res, 127x127 quads, I can’t make it lower res because of sculpting). I successfully imported two of them but can’t import more. Is there a way to import weight maps in lower resolution than landscape, and would it help? Every time I try to import them, my hardware usage goes to 100% of 32gb of ram and 100% of 8gb video ram on my GTX 1070.

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**Author:** ![fyre2cat](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@fyre2cat](https://forums.unrealengine.com/u/fyre2cat)\
**Post date:** [April 14, 2019, 9:33pm UTC](https://forums.unrealengine.com/t/landscape-layer-blend-weightmap-video-ram-usage/438766/2 "2019-04-14T21:33:59Z")

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well i fixed it by making my virtuyal ram pagefile 52gb (i have 12gb of ram) and msi afterburner to get max out of my gpu (1050ti 4gb) and only then was i able to do it without crashing got 255 quad 8192 landscape with highly complex landscape material.  
hope its helpful

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**Author:** ![Czaja](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Czaja](https://forums.unrealengine.com/u/Czaja)\
**Post date:** [April 14, 2019, 10:29pm UTC](https://forums.unrealengine.com/t/landscape-layer-blend-weightmap-video-ram-usage/438766/3 "2019-04-14T22:29:26Z")

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Thanks! I will keep it in mind for my further experiments. In that case, I split Landscape into 3 pieces with lower res. It doesn’t came up very nice because it was a landscape inside another landscape with a hole (made by removing quads) and another one with those two inside. I was only interested in one mountain in the middle, the rest was just as the view from the mountain’s peak.