root@CELERON-B250:~#
root@CELERON-B250:~# lspci -t
-[0000:00]-+-00.0
+-01.0-[01]--+-00.0
| \-00.1
+-02.0
+-14.0
+-16.0
+-17.0
+-1b.0-[02-0a]----00.0-[03-0a]--+-01.0-[04]--+-00.0
| | \-00.1
| +-02.0-[05]--
| +-03.0-[06]--+-00.0
| | \-00.1
| +-04.0-[07]--
| +-05.0-[08]--+-00.0
| | \-00.1
| +-06.0-[09]--+-00.0
| | \-00.1
| \-07.0-[0a]--+-00.0
| \-00.1
+-1c.0-[0b]--+-00.0
| \-00.1
+-1c.5-[0c]--+-00.0
| \-00.1
+-1c.6-[0d]--+-00.0
| \-00.1
+-1c.7-[0e]--+-00.0
| \-00.1
+-1d.0-[0f]--+-00.0
| \-00.1
+-1d.1-[10]--+-00.0
| \-00.1
+-1d.3-[11]--+-00.0
| \-00.1
+-1f.0
+-1f.2
+-1f.4
\-1f.6
root@CELERON-B250:~#
placing only --4g-alloc-size 4080 or 4078 without placing anything else you still have problems?
i was using a splitter so i just switched mobos to one had 6x pcie slots
+-1b.0-[02-0a]----00.0-[03-0a]--+-01.0-[04]--+-00.0
| | \-00.1
| +-02.0-[05]--
| +-03.0-[06]--+-00.0
| | \-00.1
| +-04.0-[07]--
| +-05.0-[08]--+-00.0
| | \-00.1
| +-06.0-[09]--+-00.0
| | \-00.1
| \-07.0-[0a]--+-00.0
| \-00.1
these are the 5 cards that are causing low hashrate is what im thinking
that looks exactly like a pcie splitter but built into the mobo
im assuming zombie mode takes the extra bandwidth from the loss of hashrate and gives the extra to the memory channel
thats why we need gen 2 is for the bandwidth im thinking
there might be some combination of removing cards that would at least get a couple to a few of those 5 cards at current full hashrate