As a boyfriend 10.0 , and not pretending to update to Husband 1.0 in the next years, I can only tell you that Nagging 5.3 has a clear toll on the whole operating system.
You should try to group Bike Racing and other similar apps into a non priority mode, under HOBBIES 1.0 , so you won't notice that much lag if you are not taking them into account, and you will see an improvement in all other beneficial apps, if you don't keep trying to kill those other maintenance apps.