But I would say you are in the minority.
So I am genuinely curious why this doesn't work for you, but it does for others, me included. I have just started to move from a C5 to C7, and these were the first things I tried. And they didn't have any apparent issues.
Same, I have a daily service restart and weekly hub reboot and my C7 is super responsive.
Tbh I could probably change the reboot to monthly.
Ps 2.2.4.143 works perfectly for me. I’m not sure what changed but my hub is now even faster.
So I was literally installing an Aeotec Door Sensor 7 and having trouble when the .143 firmware update landed. After update, no issues!!! Perfect timing..
Thanks again!
I've got the Aeotec Door Sensor Gen5 and find that every time I upgrade the Hub FW it shows up as "Failed" until I open and close the door. Then it's fine.
I'm wondering if that is due to me using a Generic z-wave contact sensor driver?
I thought I'd just found a bug .... but after investigating a bit deeper I discovered my C7 is running perfectly, it's just Netatmo having service issues. 
In case folks just arriving didn't see, 2.2.4.143 is out, as has been already been noted above. This release replaces 2.2.4.142 which was pulled due to a gnarly bug as well as a generally bad attitude.
I'm going to wait to see how snappy my system is tomorrow morning on 2.2.3. It had been slowwwww 2.2.4 mornings, so I reverted back today.
Chicken! 
Good comparative test. A day + overnight on 2.2.3 vs. 2.2.4.
I'll be on the edge of my throne awaiting results. 
I definitely found 2.2.4 slower than 2.2.3 until 2.2.4.143 was released, now it's faster across the board.
The Dashboards, on mobile in-particular, were really sluggish.
Not an image I'd want to dwell on.
It's been massively slower last few days in the morning. Like open a door with a contact sensor and wait 30 seconds for the light to go on.
or didn't turn on at all in some cases - I just assumed a bug in Motion Lighting as none on my RM automatons were impacted (until .142).
That too, for me.
Heh heh heh...too late, you'll never unsee it!! 
For me the devices were working (I checked), but it was ML that wasn't - so far ML has been flawless and very fast on .143.
Yeah I have both the 5 & 7. Was migrating over from my C-4 to C-7 this afternoon. The 5's all wanted to pair S0 so I had to use the Z-Stick to get them included with no authentication. This also happened with my Aoetec Doorbell Gen 5 (Siren Only).
Mine are running in S0 without issues (aside from the one noted). It's mildly annoying there isnt a proper HE driver for it seeing as the Gen 7 version is natively supported.
Yeah but they are overly chatty that way which could be a concern.
Does it need to be a 500 stick to join them w/out SO, or a 700? Or both?
That's a good question. I do have both but have always used the Z-Stick out of habit. I assume you could though as auth doesn't traverse controllers - is my understanding.
I’m still on 2.2.2.129 
. Safe to update to this? On a C-5
Download the Hubitat app
