Back before Mesh and Roaming between APs was a thing I used to adjust the transmit power on my three DDWRT APs so that they didnt overlap fully to force roaming between them. I did this mostly because I didnt want too many devices on the same AP as a lot of devices back then would be stubbonly sticky to the first AP they found and APs could handle a lot less loading that they do now so it was far more important to spread devices out across the APs.

Now I still have three APs but they all WiFi 6 as are the main devices that use it so I do not bother micro managing it as WiFi 6 is much better at congestion and Roaming. I would rather have more range than worry about it, I have good coverage from the back of my garden to the front of my drive, its not essential that I have that but it is very very useful at times.

5Ghz penetrates a lot less than 2.4Ghz so that does not cause as much problems if left at 100%. 2.4Ghz can be a pain for others but I cannot wait to turn that off at some point in the future anyway.