Maybe take a look at this Index Filter…
ADX Index Filter for Short Term MOC/MR Systems
Maybe, instead of using it as an Index filter…. as you say, use it as a VOLA check and adjust your STRETCH during Low VOLA using an IIF statement.
For what it’s worth, the index filter has been OFF for the past 5 days, so I haven’t placed any trades during that time.
FYR:
Here’s a snapshot of the On/Off for the ADX Index Filter for the past month or so.