What is PhysX "postIslandGen" and how can I reduce its impact on performance.

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I believe it has something to do with the AI, given that the more Nav Mesh Agents I put down, the more CPU it drains, but I would like to allow for significantly more enemies then it currently allows for and this is bottle necking my performance.

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Answer by Ilseroth · May 08, 2015 at 06:14 PM

Alright don't worry about it, I figured it out and I am dumb. I am using pretty simple buildings, so I figured a mesh collider would be fine. It wasn't don't use mesh colliders kids.

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screenname_taken · May 09, 2015 at 01:03 PM 0

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The colliders, in terms of performance go: Sphere,Capsule,Box,$$anonymous$$esh (from fastest to slowest). Also, ticking on "convex" on the mesh collider component helps with speed.

Answer 2

Answer by Arowx · Oct 11, 2015 at 05:02 PM

Note: Large moving Trigger colliders can really push the postIslandGen to reduce performance. Possible solution switch the Trigger collider off and on at intervals or reduce or dynamically change their size.

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Twitch375 · Sep 26, 2016 at 05:41 PM 0

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@Arowx Have my babies. Thanking you isn't an option. The solution is so simple but it improved the number of AI I can have on screen from 100-200 to 1000+. I just set the trigger on for a single fixed update frame every couple of seconds and delay the toggle a random amount so every agent isn't turning on their collider in the same frame. So ya, thank you.

Belleal · Apr 03, 2018 at 06:09 PM 0

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Exactly what solved my issue. Thank you.

What is PhysX "postIslandGen" and how can I reduce its impact on performance.

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