Asus z270-p / 2x 1070 3x 1080ti / Cant get it going PLEASE HELP... I havnt sleeped 2 days :/

Hello everyone, im new in the mining.

I have asus z270-p and 2x 1070 asus rog and 3x 1080TI gygabyte aorus extreme.

I have stabilized 4 GPU's but 5 cant... 4G decoding is one, i've flashed latest mobo bios 0808 version. PCIe speed tried with GEN1 and GEN2 too...
Windows 10 64 bit pro, 1703 version.

Im installing windows with 1 Gpu conected and then im conecting them separately.

I've managed that in device manager i can see all 5 GPUs without problem marks but when i start miner with 5 gpu most of time 4 gpus are working properly and one of them 1070 or 1080ti (in the multiple times of tries) is giving lesser sols and after 1-2 minut crashed and in most of case im getting windows error TRD failure...

They are conected with pcie risers ver 6 with molex power.

Please someone give me some tips... Im not lazy one and im reading before asking but no solutions worked for me ...

Is your power supply enough for that many GPUs

yes i think... I use separate server psu for gpus 2400W it can handle 3x power that is currently conected ...