Switching from ETH only mining to DUAL mining and back decreased my MH/s by 20%!

[KPP333]

Hi all,

I'm new to Ethereum mining and I would really appreciate some help from experts who visit this forum.

I started mining a few days ago with my brand new rig [6x GTX 1060] and the performance was quite good at 140 MH/s using Claymore on ethermine pool. The rig was only consuming 540W and the temperature was around 66 oC on all GPUs. After 2 days I decided to try Dual Mining and I set up ETH + Decred  on Claymore still using my ethermine pool for ETH and suprnova pool for Decred and my performance was 115 MH/s for ETH and 1,150 MH/s for Decred. After running this config for a day I realised that the loss of hashrate in ETH mining and higher electricity consumption (up to 720W in Dual mining) wasn't a good trade off especially that income from Decred was miniscule (around $1/day).

I decided to turn my rig back to ETH only mode and as soon as I did that my new hashrate was 118 MH/s (down from 140 MH/s with the same settings) and it's not going up at all so I lost almost 20% of my hashpower just by switching my rig from ETH only mining to Dual mining and back to ETH only and I cannot account for that loss of hashpower??? Also now that I'm back in ETH only mode my energy consumption is much higher (670W up from 540W) and GPU temerature is around 75oC! (up from 66oC). The difficulty hasn't changed that much in the meantime, I tried changing pool (nanopool- the same low hashrate at 118 MH/s) and even installed ethminer (which was achieving even lower max hashrate (at aroun 112/ MH/s max). So I'm running it now mining ETH at much lower hashrate [118 MH/s down from 140 MH/s] higher electricity consumption [670W from 540] and higher GPU temp [75oC up from 66oC] with the same settings. I didn't change one thing (except expanding virtual memory to 16GB).

Can anyone help me get my performance back to normal? I would really appreciate your help.

[adaseb]

You need to adjust the intensity of the dual mining coin.

You need to adjust it so your ETH speed stays the same. Search the Claymore thread with examples.

[Souran]

Yes, absolutely but Im now back in ETH only mode [-mode 1] and I am still seeing these issues. I dont know why. My MH/s is still down at 118MH/s whereas my rig should be getting at least 140 MH/s as it used to before [6x GTX 1060].

With the claymore window open (in dual mining mode), play around with "+" and "-", it changes ur intensity on the fly, and press "S" to see ur current hashrate.

usually at around 18-22 for intensity, you will get the same eth hashrate as single mining.

I never used the "-mode" command, I'd rather just erase the dcr pool address/settings from the bat file to disable dual mining.