Particles, sensitive to altitude?

[CarlGustaffa 4]

I have this dust particle thingy I want to use in a mission. The position of the emitter is set continuously, but the moment I walk past 650-660 meters (only a few places has this altitude (try around grid 109034 on Takistan), the emitter no longer creates any particles. When I walk down again, it all comes back.

So, are particles (maybe floating point accuracy issues) sensitive to altitude?

Related, I also experience similar weird stuff with #lightpoint.

[Evil_Echo 11]

Particles do seem to be altitude/distance sensitive. Just need to create a big enough cloud to notice - which I have done.

Guessing this is some kind of optimization in the game engine kicking in. BIS would know more.