https://elluel.net/index.php?threads/guide-frequently-asked-questions-faq.23/Is Mesos Rate capped at 400% or 600%?
Both meso and drop percentage (%) values have a soft cap where any additional value exceeding the soft caps are less than significant and will not make much of a difference. Meso is capped at 400% and drop is capped at 600%. The values are inclusive of server-wide meso/drop multiplier events.