I am an amateur enthusiast who migrated to Hubitat from Wink around 6 months ago. I have really enjoyed puttering around with my Hubitat and I have amazed myself with how I have developed such an affinity for implementing various smart home devices.
Alas, as a 70 year old retired guy with too much time on his hands, I enjoy the darn Hubitat so much that I have developed this nasty habit of fixing things that are not broken. For instance, I too have noticed a response time slow down on many of my devices and have followed this thread with interest. I was especially interested in the comment about using a soft reset and immediate data base restore to perhaps speed up all processes. As I always do, I researched how to accomplish this and did so. Well, all hell broke loose - my Echos no longer responded to voice commands and when I finally got it to work, my TV came on instead of a lamp with an Echo voice command, lol. Being persistent, I rebooted , unplugged my Hubitat and I almost gave it mouth to mouth, for crying out loud. You know what? The system is working better than ever!
My two cents - keep going with the same business model and product development. It is nirvana for old guys like me and the sense of accomplishment when something works is wonderful and I don't have to think about my aging prostate at last!