I have played several games in GW. I notice that the grenadier can fire as usual, but their shoots never reach the ground. The shells just disappear above the enemy buildings or units without making damage. I am not sure whether this also occurs in 1 vs 1 ranked games.
After removing the effect mod, this problem disappears. It is the problem of the mod. I originally think the mod only changes the appearance of the shells without modifying the trajectory, but I am wrong. Sorry for the bother.
Yeah, Galactic War files are pulled from client-side rather than server side, meaning that any stats changed by a client mod that wouldn't surface in MP surface here. Yet another of the many things that make Galactic War a pain in the *** to mod.