When a rocket is launched at a distance of more than 3 thousand blocks, it simply does not load and hangs somewhere in space. You have to fly along the flight path and only then the rocket will hit the target

Are you playing on a server? What version of the mod are you using?

I play in my solitary world. The latest version of the mod

Tracking by radar, the rocket simply disappears on the way. When I arrive at the place where the rocket disappeared, it reappears and flies on

There are no such mods. Only after the problem occurred, I installed the mod on the block that loads the chunks. Optifine is also available

Do you have any other mods? Things for performance improvement or ones that alter chunk loading maybe?

Yes, I'll try it well. Thanks
I will write the result soon

Could you try and remove Optifine? I'm not 100% sure but I've heard it changes some things regarding chunk loading which might conflict with the missile's chunk loader.

It worked, thanks. I assumed it was optifine, but for some reason I didn't attach any importance to it. The rocket flew calmly for 4000 blocks