@Something123 How many are you running per hub? I only have two 2Pacs each on its own Orico P10-U2-BK. When I build vthoang's cgminer with icarus enable and try to just run a single Antminer U2 I still get dead 2Pac. Using Minera on my Raspberry Pi results in dead 2Pac after about 24 hours. So I would have to set it up to restart before then or remember to restart manually, but would sometimes get 0 chips found on restart so I would still have to unplug the sticks.

So current stable setup:
Raspberry Pi Model B Plus running Raspbian Buster Lite Version: September 2019 Release date: 2019-09-26 Kernel version:4.19
Adafruit 3.5" TFT display for the Pi
2x Orico P10-U2-BK each only running sing 2Pac @ Frequency 225 both with vpot set to 1.361v. No HW errors but I do get some rejects, but only like 100k rejects per 7mil accepted running @ combined 49.8 GH/s.

I am getting ready to try to enable icarus to try and run 10 Antminer U2 on a ORICO A3H10-U3-V2, but I have not had much success with --enable-gekko and --enable-icarus working well on Raspbery Pi. Because why not, I have them sitting around.

If I wasn't unemployed waiting on a decision about disability I would definitely get two Gekkoscience hubs along with 12 NewPacs. I would run my two 2pacs on each one of the hubs 2A port and NewPacs on the others.

[Edit]
Yeah, I get weird detection issues. Even if I add the Antminer U2 after the 2Pac. It wants to treat one stick as U2 and the other nine as a single U3.