Big CPU overhead after converting scene to entity

Hello.

I decided to try Entities to reduce battery consumption.
And my first try, as i think, failed.

I have simple scene with bunch of instanced 3D low poly objects and small amount of textures.

Without using entities at all i have this:
Batches 107
Tris 36.8k
CPU load 3.5ms

IMPORTANT! I don't have any logic in this scene, but entities package already imported.

After i convert all scene objects to entities, i have this:
Batches 27
Tris 40.1k
CPU load 5.6 ms

So because of this there is less FPS and as i can suggest - more battery consumption.

Can someone, please, explain me this ? May be i understand something wrong?

Unity 2019.3.1f1
URP 7.1.8
Entities 0.6.0
Hybrid Renderer 0.3.4

 

Are the objects static? There is a "Static Optimized Entity" component you can place on gameobjects the will be converted and never moved. Then there is a "FrozenTag" you can use to make the rendering not have to update anything about the mesh after the first run. The FrozenTag is a bit tricky to set up if you are not using the sub scenes workflow though.

 

If you open the Entities Debugger window, it lists all your systems and how many milliseconds each is using, it could help narrow it down. Maybe the editor LiveLink system?

 

I don't want them to be static ))

 

I'll check it tomorrow, thank you)

 

In entity debugger i don't see this overhead. But i still se it in statistic window in game view
Can't understand anything )))

 

Are you on built-in render pipeline or URP/HDRP?

 

URP 7.1.8

 

SRP batcher enabled? Plus current URP support for HR a bit limited, coming HRv2 should be better.

 

DOTS run significantly slower in Editor, about 2x even 3x the time is needed as built to standalone player. I think you should build it to real device to see the result more accurately