It sounds like the LFO Frequency is being modulated by the Keytracking or Coarse tuning modulation sources. To see whether this is the case, you may click on the "Modulation List" and look for "LFO 1 - Frequency" (or "LFO 2 - Frequency") under "Destination." If you find this, you may look at the "Source" column to see what is modulating it, and if you'd like you may click on "Remove" to remove this modulation.
To see more on modulation with Equator, check out these articles:
Please let me know if this helps or if you have any more questions.