"Faster Mob Spawning" civ perk - seems to be way, WAAY more than a 30% buff

I placed a zombie spawner in civ land, placed so the mobs fall outside of the 9x9x9 area around the spawner. I ran three roughly 5-minute trials, and came up with the spawn numbers (using the F3 entity counter + counting stacks) 304, 254, and 302. These are rough numbers, but give an idea. Spawners seem to have a base rate of 2x vanilla (if you shift + right click on a spawner, it says 100-400 ticks, rather than 200-800 ticks for spawn time, regardless if placed in civ land or neutral), so we will calculate based on this 2x rate. This would be an average of one mob per 12.5 seconds. For 5 minutes, that would be an average of 24 mobs. 30% more would be 31.2 mobs. It looks like mobs are spawning roughly 8x-10x faster than intended! The one thing I will mention (given that I know some players felt the economy was too slow) - assuming this has been the case since the beginning of the season, there are 1 or 2 other factions that have likely made SIGNIFICANT money from this, and I'm not sure if they are aware this is unintended. I think at this point it's probably best to leave this as-is for this season (basically consider it a "feature" rather than a bug lol), and for next season fix this, and possibly re-balance the economy to compensate for this being fixed. (I might ping a few players to get feedback)