finetune on my own synthetic data is good, but test on real data not good

[Abasin123]

hello,
I finetune on my own synthetic data, the result is good on synthetic data, but when I test on real data, it performs not good.
If I use the pretrained sceneflow model to test real data, it is better than the finetune result.
synthetic data:

real data:

What should I do?
Thanks

[ynma-hanvo]

hi, I am also intereted at how do you generate the synthetic data?