I did not try 17.10. I will try Ubuntu 17.10.
I have mb Asus Z-270-P, cpu intel celeron G4500, 4gb RAM, now i have two GPUs MSI GTX1070 Gaming X, but I am planing to use 8. Or 6.
Any suggestions?
Your chipset is very new, even though CPU is from the previous generation. Ubuntu 17.10, with the newer 4.10 kernel should be more compatible.
Remember to update the bio as well.
Afterwards, go into bios, find the PCH option under the PCI-Express speed, change it from AUTO to Gen 1 or Gen 2.
I've got 3 versions of Ubuntu 16.04LTS, with different Kernels - some work and some don't.