Unity + async/await support

[JasonSpine]

I need to run CoACD in realtime, but it lags, whenever I run the algorithm.
So I thought about using Threading:

        public async void SetColliderMesh(Mesh rendererMesh)
        {
            BoxCollider tmpCollider = gameObject.AddComponent<BoxCollider>();
            Bounds tmpColliderBounds = myRenderer.localBounds;
            tmpCollider.center = tmpColliderBounds.center;
            tmpCollider.size = tmpColliderBounds.size;

            List<Mesh> convexMeshes = await Task.Run(() => coACD.RunACD(rendererMesh));

            Destroy(tmpCollider);

            for (int i = 0; i < convexMeshes.Count; i++)
            {
                MeshCollider mc = gameObject.AddComponent<MeshCollider>();
                mc.convex = true;
                mc.sharedMesh = convexMeshes[i];
            }
        }

But I get the error:

UnityException: get_canAccess can only be called from the main thread.

ChatGPT says that TaskRun() shouldn't touch any Unity objects so I would need to convert Unity objects to simple arrays and pass them to ACD method that would take raw arguments and this method would return arrays instead of unity objects....