Multi GPU running at Intel X299

[ADVenturePO]

Hi OCers!

I need a bit of tips, not for benchmarks but in fact for maximum stability in a long period of time running under stress.
What I have :

i9-7960x, Sage WS 10G, 128GB RAM G.Skill Trident Z CL16, and 4 RTX 2080 TI.
This config is stable, but system was hanging at 1.9 CPU input voltage - I've changed to 1.95. 
Haven't really move VCCIO 1.1 & VCCSA beyond 1.15 - low because this MB has PLX chips.

I'm curious should I increase VCCIO and VCCSA or if it's stable should I leave it alone.
I know that RAM is getting into the picture and 128 is a lot for this platform  - without controllers and ECC. 

 

If You had any suggestions please share.

Thanks 

Peter