Selenium WebDriverException: Expected 'id' mouse to be mapped to InputState whose subtype is undefined, got: pointerMove
I ran into the same issue today. You might have observed that the first move_to_element and perform() worked - at least this was true in my case. To repeat this action, you should reset the action chain in your for loop:
actions.perform()
actions.reset_actions()
For me - the .perform fails the first time through - I am on selenium 3.3.1, gecko 15 and latest firefox using java - same code works perfectly on chrome.