Forge for minecraft v1.8.9 causing ping lag for non host players

[xXDeathblade226]

Me and a friend were wanting to play pixelmon on a hamachi server i made but from the many different attempts of changing the forge version (11.15.1.1722-11.15.1.1902) we tried may different version and the only time his ping wasn't over 1000 was with no mods in the server and we tested that any mod we had on the server was causing him ping lag. (Mods like iron chests or custom npcs mods that add blocks and mobs to the game, side mods like jei or journey map didn't cause ping lag) from the testing all i can gather is that some problem is with forge because i have hosted servers for 1.7.10 and 1.10.2 and only minecraft v1.8.9 had caused this ping lag. If anyone has any idea why this is happening i would love to hear.

[LexManos]

There is nothing in Forge that would cause 'ping lag' And that's is a extremely vague term.

Beyond that, update to 1.10.2 and supply logs if you want help here.

[xXDeathblade226]

To specify what is happening is that when the server starts with a mod that adds blocks or mobs anyone that is not local to the servers location get extremely high ping and we have test many different versions and mods to get to the same conclusion that his ping keeps jumping with the 1.8.9 version of forge.

 

And by ping lag i mean the number that is displayed in the tab menu. His ping is over 1000 during a time when the server has a mod enabled.