At the beginning of the pandemic, my team worked on optimizations as priority number 1 as we got a lot of new users with terrible configurations who wanted to d

At the beginning of the pandemic, my team worked on optimizations as priority number 1 as we got a lot of new users with terrible configurations who wanted to do a lot more that what ever intended for that same hardware. I managed to find a crappy laptop to do some testing and work on optimizations, and it wasn't pretty. No development tool would work on it. My recommendation is thus: aim low, but not the lowest. You'll still be able to measure impact of your changes, and you'll be able to collect some data and other measurements about what is slow.