Turning End X ISI isolation loop on (which was declared to be the default state of ETMX ISI) makes ALS beam move too much. It's so bad that, by the time the beam comes from TMS to ITMX to ETMX to ITM baffle diode, the beam motion is larger than the beam radius.

After fighting with it for a few hours I concluded that we cannot do anything useful with it, so I turned it off and left it as damping only.

Don't turn on the isolation. If you think you have a better isolation filter, you need to coordinate with integration team to find a good time slot for testing.