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	<title>Real-Time Physics Simulation Forum</title>
	
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	<updated>2021-04-18T07:56:05+00:00</updated>

	<author><name><![CDATA[Real-Time Physics Simulation Forum]]></name></author>
	<id>https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/13195</id>

		<entry>
		<author><name><![CDATA[www20602]]></name></author>
		<updated>2021-04-18T07:56:05+00:00</updated>

		<published>2021-04-18T07:56:05+00:00</published>
		<id>https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=43405#p43405</id>
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		<title type="html"><![CDATA[Trimesh dynamics gets very slow in meters]]></title>

		
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I am running physics for meshes. When using millimeter as the metrics, my frame rate reaches 60fps. But when I change them to meters, the number lowers down to 1fps or less. I am wondering if I did a wrong option.<br><br>Figures below:<br>Meter, slow:<div class="inline-attachment"><dl class="file"><dt class="attach-image"><img src="https://pybullet.org/Bullet/phpBB3/download/file.php?id=1868" class="postimage" alt="7bb5a4e30dc9b618c5db72f0e263602c93efb346.gif" onclick="viewableArea(this);" /></dt></dl></div>Millimeter, fast:<div class="inline-attachment"><dl class="file"><dt class="attach-image"><img src="https://pybullet.org/Bullet/phpBB3/download/file.php?id=1869" class="postimage" alt="c57bd3b755b51e9bafc3f2e2822ee98a2f4c5bd9.gif" onclick="viewableArea(this);" /></dt></dl></div>Also, when using direct ContactTestPair,<br>I got weird contact points even when two meshes are fully separated, as shown below.<div class="inline-attachment"><dl class="file"><dt class="attach-image"><img src="https://pybullet.org/Bullet/phpBB3/download/file.php?id=1870" class="postimage" alt="7eaf3386de7027afb0fbbe22d219c9084f4a335b.png" onclick="viewableArea(this);" /></dt></dl></div>These weird contact points gets disappears as I increase the metrics (i.e. meter to mm).<br>I have been struggling with this problem for months, and hope I could find a solution here.<br><br>Thanks.<p>Statistics: Posted by <a href="https://pybullet.org/Bullet/phpBB3/memberlist.php?mode=viewprofile&amp;u=13330">www20602</a> — Sun Apr 18, 2021 7:56 am</p><hr />
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