What's up, RMers?

[MechanicalPen]

I bet one of your battle windows is trying to refresh every frame, most likely because the boss is dead and it is trying to display after battle stuff. So maybe a custom EXP window or something. Even the default Status Window is guilty of this, and that may be contributing to the lag problems.

Code:

# If not after battle phase
        if @phase != 5
          # Refresh status window
          @status_window.refresh
        end

See, that window refreshes any time Phase is not 5.