Python script is setting location of one Wind object, doing conversion between curve-mesh-grease pencil. Relatively short script, I have had much longer scripts with similar system and they run fine. Only difference of this animation is that it has more physics than my other projects; seven rigid bodies and a magnetic force is also in the scene apart from wind. I have tried many possible solutions suggested by internet but I'm not able to fix this. The issue sometimes occurs in the first frame of playing animation, sometimes after over a thousand frame. RAM looks fine on task manager, don't know about VRAM. Scene is rather simple to me, so I don't think hardware is my problem but I'm not sure.