Claymore v10.0 &v9.1 are producing a 50 watt increase in any of my GPU's power consumption right at "create GPU buffer" during startup. To get this to happen I just need  to have GPU clock set to a certain speed. In the case of two of my 8GB ASUS Radeon RX580's that speed is:

GPU    normal           high          voltage
         power           power
 1     1000 MHz      1001 MHz      900mv
 2     1010 Mhz      1011 MHz      900mv

This issue is insensitive to the memory clock which has been the standard 2000 MHz through 2050 MHz.
I've had the issue with the standard BIOS and modified BIOS.
I only have Claymore v10.0 and v9.1 to test.
The issue is consistent, very repeatable. Operation is unchanging after startup.
I have to rigs suffering this issue, each has their own Radeon cards.

What's going on in GPU Buffer Creation that can trip up the GPU into higher power consumption?

Anyone experience this?