It was XMP I @3600Ghz, I lowered it down to XMP II @ 3000Ghz (but with tighter timings) anf removed the guity app from startup and no freeze for the las two days.
It seems that this app, when automatically launched at session startup just increases hugely this 3d column, if I don't launch it at session startup but lanuch it after it doesn't create that issue. Like if it launches before everything is fully up. and running. This display in addition to hdmi/dp has a usb hub to connect the calibration probe. Even if the probe isn't conencted it still looks for something on the USB ports probably.
Anyway, no freezes since I used my XMP II ram profile and removed the app from startup. So fa so good. But I think the real culprit was this app launched at startup.
