Hello my friend,
didnt see you for some time. Glad you come back

I think the overflow is because you used DP_ENT_TRAILEFFECTNUM.
Please try to use DP_SV_POINTPARTICLES instead.
You can get the same effect with it.
I only use DP_ENT_TRAILEFFECTNUM when I have to:
When I need to follow an entity for example.
If you want to spawn a fixed effectinfo effect, then
DP_SV_POINTPARTICLES is your best choice in terms of
"overflow" when you pause your game or when you pull the console
or when you use "sv_freezenonclients".
The reason seems to be, because it is performed on a server entity,
not on client side.
I wish you best of luck for your project Nahuel !
Seven