Yeah, expert mode is impossible on servers on the current version.
Sorry, no comment!
I love this modpack. It's different to other sky modpacks. Also we play at the expert mode.
If you have massive lags on Modern Skyblock 2 REMOVE all your Structured Crafter blocks. Each consume 15% of the server load balance (in any mode). After we removed all our Structured Crafter the lags was gone and the CPU load balance was going to normal value!
Snow Golem does not working on the platform. On answer I found was changing the mobGriefing. But this break the mechanic of some bosses.
I think the better choise should be a different start on this platform. (The guide should be changed by the mod author).
First you harvest the a Snowblock by shift+right+clicking and gets 8 Snowballs. You need only 4 for a new Snowblock. With this method you increase the amount of your Snowballs very slow. Now you create the Freezer, the Heave Snowball und the Heavy Snow. With Heavy Snow you enlarge the platform and can build der Snow Golem on that. The Snowball production works on Heave Snow!