hi!, i have used these models in a FiveM server with other players when it was still active, they didn't run into anything like that, but i'll set up a server on my laptop, and test it with other models spawned, i'll get some friends to hop on to stress test the models, I'll get back to you ASAP,
as well is it both models? or one in particular, thanks-
Milk's Modifications
ULC is a server side script, that allows for more in depth lighting set up options, and fancy stuff like brake warning patterns and traffic advisors without opening your extra menu!
download and read more about ULC on dawnstars website!: https://docs.dwnstr.com/ulc/overview