One issue that I've had with this mod is weather rates on a dedicated server, If I set the frequency of storms to occur for each player, player's that are clustered in an area will experience non-stop rainfall, however, if I set global rate to true, players who are spread out across the map will experience little to no weather due to the way the algorithm works. (Idk if this is possible) but maybe scripting the weather to work in a way that's radius based may be a better option, for example. let's say the simulation distance is set to 1500, anybody within that radius of 1500 blocks will experience the same weather rates as everyone in that given radius, rather than it being server-side or per player based. If someone steps outside that given radius, another simulation ring will be created so everyone can experience the same weather rates at the same time, without making storms too frequent or infrequent for each player, therefore making it not reliant on the number of players online at any given time. (Like I said IDK if this is possible or if there's a combination of settings that would enable something similar in the pre-existing config.)

If players are grouped in one area then you would use the global rate, if the players are spread out then you would use the per player.

I don't remember how but you can set up the mod to randomly generate storms with out regard for the number of players on the server or the temperature/humidity differences between biomes.