{"id":973,"date":"2022-02-07T02:29:55","date_gmt":"2022-02-07T02:29:55","guid":{"rendered":"https:\/\/lucyestela.com\/dev\/?p=973"},"modified":"2022-03-16T23:18:02","modified_gmt":"2022-03-16T23:18:02","slug":"a-trick-to-stop-your-metahuman-crashing-your-hololens2","status":"publish","type":"post","link":"https:\/\/lucyestela.com\/dev\/unreal\/a-trick-to-stop-your-metahuman-crashing-your-hololens2\/","title":{"rendered":"A Trick to stop your Metahuman crashing your Hololens2"},"content":{"rendered":"
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When I first started importing my Metahuman into my Unreal file and pixel streaming it to the Hololens 2, it would crash seemingly randomly. If I had my Metahuman in front of the PlayerStart on load, then it crashed instantly. If I had my Metahuman load behind me and I had to turn to look at it, then it would load but as soon as I walked towards it, it would crash. If I placed it further away it wouldn’t crash, but then I couldn’t walk up close to it.<\/p>\n

So I did a quick experiment where I hid every part of the Metahuman  – no crash – and then introduced elements back one by one. Other developers probably already knew this, but I discovered that it was the hair elements making it crash.<\/p>\n

Now Metahumans having hair in general is ok, it was when it was switching between LODs that it crashed, so I realised then pretty quickly that it was when switching between a low LOD (when I was far away) to a high LOD (when I walked up close).<\/p>\n

This might change when the full official release of Metahumans and Unreal 5 is released, but for the time being I just need to learn as much as I can about Unreal, Metahumans and Hololens development. So I have a solution that will let me continue on, and to be honest the rendering of the Metahumans is still pretty darn nice. I mean when I get close, I keep expecting them to give me a sidelong glance.<\/p>\n

So, if you just want a quick fix this is what I did. You can go into more research about the LODs later and mess about more closely with those once you get it to stop crashing.<\/p>\n

So – Groom Assets are what you want to tweak.<\/p>\n

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Start with Hair – in the LODs details, every Geometry Type dropdown where it says  Strands<\/strong>, change it to Cards.<\/strong><\/p>\n

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Do the same for the eyebrows.<\/p>\n

Now I didn’t change the eyelashes because they disappeared when I did. But I did just hide the eyelashes for now.<\/p>\n

Another thing I did was to limit the LODsync settings so that it wasn’t trying to switch between the levels while running. To do that go into the metahuman blueprint,  and select LODSync<\/p>\n

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Then I limited the Num LODs (Sets the maximum number of available LODs that any component in the list can use. ) I didn’t want it flicking between levels so I set this to 1. Then I set the Forced LOD to 1. <\/p>\n

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But still it stopped crashing in the Hololens 2 and that was my objective.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

When I first started importing my Metahuman into my Unreal file and pixel streaming it to the Hololens 2, it would crash seemingly randomly. If I had my Metahuman in front of the PlayerStart on load, then it crashed instantly. If I had my Metahuman load behind me and I had to turn to look … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"bgseo_title":"","bgseo_description":"","bgseo_robots_index":"index","bgseo_robots_follow":"follow","footnotes":""},"categories":[60,114,59],"tags":[],"class_list":["post-973","post","type-post","status-publish","format-standard","hentry","category-hololens-2","category-metahuman","category-unreal"],"_links":{"self":[{"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/posts\/973","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/comments?post=973"}],"version-history":[{"count":5,"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/posts\/973\/revisions"}],"predecessor-version":[{"id":1063,"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/posts\/973\/revisions\/1063"}],"wp:attachment":[{"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/media?parent=973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/categories?post=973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lucyestela.com\/dev\/wp-json\/wp\/v2\/tags?post=973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}