I was playing on a Minecraft LAN server, hosted by me, with one friend. It was modded, so we couldn't play without lag unless we had very good computers, which we didn't.
My question is how I could have huge lag spikes on the host computer with the joined computer remaining as it was (until it was disconnected from my lagged server).
The host computer is a Mac, the other is a Windows 10. Both have 3072MB of RAM allocated to Minecraft and are running the Java edition. The mods used by both clients are specified in the Farming Valley modpack