RX 5700 XT high temperature mining on HiveOS

Hello guys,

recently i boutght a Gigabyte Radeon RX 5700 XT 8GB Gaming OC 256-bit, GV-R57XTGAMING OC-8GD to start my mining experiments trough HiveOS.

Since i started to mine realized that Ethminer doesn’t works with RX 5700 models. Ok, if i can’t use it with 0 fee i will try PhoenixMiner. But i came across with another problem now: High temperature.

No matter if i define a overclock or not, at any moment PhoenixMiner claim that is “tuning my GPU” and my hashes rate stays at 50/mhs with 120w or more. My memory temperature elevates so fast that reach 100ºC in only seconds. So i’m forced to turn off the computer to avoid damage my GPU.

I’m using 0.6-190@210111 HiveOS version, and tried some overclocks without bios editing.

Guys, am i doing something wrong?
Also i ask, can someone please edit my original BIOS (https://drive.google.com/file/d/1ROpAza4PLrQDaFYrW_mBLlSVSWf5UJjp/view?usp=sharing) to low down the temperature?

If someone can help me i will be very grateful, because i don’t know what to do anymore.

Thanks,
William