Yes, and the example by @bugbear (where a Person 2-stage custom filter runs faster then the 1-stage Event custom filter it references) might be a good place to start visiting.
or: 0012034: Overhead of Filter Gramplet seems excesssive in large Trees
Iāll have to dig out the Laptop (which is on its last legs and may have to be nursed along) and export the 2020 backup with Privacy exclusions. Then eMail to you. Might take a day or 2. [sent 3 days later.]