Weird stutter in ECS when rotating cube

Questions & Answers
1

Hi, I’ve been trying to program in ECS lately as it is still new to me, and I encountered an issue when attempting to create a spinning cube.

this is my current code

using Unity.Entities;
using Unity.Jobs;
using Unity.Transforms;
using UnityEngine;

[AlwaysSynchronizeSystem]
public class CubeRotationSystem : JobComponentSystem
{
    protected override JobHandle OnUpdate(JobHandle inputDeps)
    {
        float deltaTime = World.Time.DeltaTime;
        Entities.ForEach((ref Rotation rot, in CubeRotationData data) =>
        {
            Quaternion rotation = Quaternion.Euler(data.direction * data.speed * deltaTime);
            rot.Value = rot.Value * rotation;
        }).Run();
        return default;
    }
}

data.directly contains a float3 of the direction and data.speed a float of… well the speed, the data never changes on this level.

the cube correctly spins but like every 5 seconds or so I can see that the cube kind of stutters before restarting to turn properly

where do you think the problem could come from ?

2

I’ve been able to notice the issue doesn’t come from my code but from the universal rendering pipelines (everything stutters every now and then, even anims from 3d models with no script attached), I’m still trying to find a fix