Hi guys, can you suggest me a good alternative for AMD Blockchain drivers?

My RIG is performing well:
http://ethernaly.it/wp-content/uploads/2017/09/mining-ethernaly-31MHs.png

but after a random number of hours (typically 18-20) I got a black screen with LiveKernelEvent 141 (Hardware related to video cards - Drivers/Temp).

I tried to install an other version of the driver (and I've not other black screen issue) but I drastically decreased the total HS rate. (from 31.xxx to 24.xxx).

Do you know if there's a more stable version of blockchain driver, or a specific version that can help me?

---Edit----
Temps

PCI-e attached video card: 52°

Raiser attached video cards: 72-74°

I'll try to add a different kind of fan-systems to reduce temperature.