I believe the easiest way to speed up execution available at this time is to use something like NocoDB and its update API
Meaning you build a new array of "members" (your variable name) with your modified data and do an API Action to your NocoDB to bulk update:
https://docs.nocodb.com/developer-resources/rest-apis/#data-apis
Has the downside of needing to add a third-party software to the stack, so you're no longer solely using Wappler - more loose parts, more chance of breaking stuff
Here, one more feature request:
You can start betting which one is going to be picked first