Cuda error 700 on 1 slave machine, only 3rd devices.

[rappet]

Hello,

I am getting Cuda error 700 on regular basis, on 1 slave machine, only the 3rd device.
I am using this slave PC with two Titan Z's, so on of the 4 gpu's on is giving this error.

When running the Standalone on the slave PC itself I got all 4gpu's work
But when I check the performance with Precision X I see that three gpu's are running at 1000 mhz, and one is only running at 500 mhz..
all dropping down to 350mhz when not rendering.

I am not sure if these two are related?

How can I determine best what is going wrong?

greetz,

edited/added:
in the meanwhile I have update the Nvidia driver (390)...
and I also will set the cards to defautl (no overclocking),
I will get back here after testing again with this update

edited 2:
Now I am getting a normal 100 mhz on all cards, but also 719 erors on all devices?

[nuno1980]

Do all SINGLE videocards (not multi-GPU nor network) not get any problems?

[rappet]

Do all SINGLE videocards (not multi-GPU nor network) not get any ptoblems?

If you mean single cards on other slave(s)?... No, they do not have any problems.