We have custom build server with Intel Server Board S2600STB + two CPUs SILVER 4110 + 6 modules SERVER MEMORY 16GB PC19200/REG KVR24R17S4/16 KINGSTON.
The problem we have is very strange. Server booting to BIOS screen after F2 takes about 1 minute. Every BIOS menu open takes 5 seconds, load default settings and save settings takes 20 seconds. Also, we have a Adaptec RAID kontroller installed. Adaptec RAID configuration also runs very slow and freezing, you can see how every screen have been drawing Debian installation till progress 20% on SSD M.2 takes 2 hours, also Windows installation till 30% takes about 4 hours. So, all system is running extremely slow, you can see how every BIOS screen have been drawing on monitor, like you have 0.00005 CPU cores. Server is brand new with all new components.
BIOS are on latest 14 version.