Conma

I think the problem is the server doesn't have enough ram, but I need to be sure before buying more. The modpack I use is Craft of exile 2 and the server has 4gb ram. When I try to turn it on I get a bunch of warns and at the end it just says "[Multicraft] Skipped 564 lines due to rate limit (160/s)" Is there a way to increase the rate limit? One time it did start, but without half of the mods. The modpack works perfectly fine on my computer even if I have the launch ram limit to 4gb.