you have an zotac and zotac take more power from the wall so at 70% you probably have 250w (like founders edition which have 250w at 100% tdp) from the wall or something close, if you let card at 100% tdp probably you will have close to 300w from the wall so check your power consumption, personally i have an gtx1070 amp extreme! and at 100% tdp it has 220w from the wall, with 80% tdp i have something between 170-180w, 1070 is rating 160W normally (founders edition and specs), on 80% power i get 2100-2113 rock stable at gpu speed on mining, gaming etc, at 100+ tdp i don't get any more speed, this is frequency limit, but under 80% tdp i got lower frequency.

how much you can do with an 1080Ti with your mod and without daily? eventualy hashrate. ty!

with opensourse i get:

GTX 1070 - 49MH/s
GTX 1080Ti - 82MH/s

you are liyng with 70% more performace:
1070 49MH/s --> 68MH/s mean 38.5% more performence, near 1/2 from what you say

on my 5 1080Ti rig i get 410MH/s on opensource and daily revenue is 16.25$ on Denarius coin according to whattomine.com and 0.0002btc/denarius on cryptopia.co.nz so who will pay 275$+ for your miner and 2.5% when it need to mine with 5 x 1080Ti 58+ days to pay your 0.1btc, pay attention denarius coin since it was launch has just drooped. ty

i answered early, i have 382.53 which you can see in screenshot which i attached (in MSI After Burner you can see the driver version). on all pc's i have 382.xx

i started to mine spreadcoin on 3 jul and first day i found 12 blocks, on 4 jul i found 12 too, on those days difficulty was 120+, yesterday i found 8 block and difficulty was somewhere at 130 and today on 140 average difficulty i founded only 5 block in 22 hours. soo something is wrong. on 16.6% difficulty increase i lost 58.4% in chance of finding blocks...

i have an gtx 1070 which have 7.2MH/s and found only one block in 36 hours, 18 hours ago and an gtx 1980Ti with 6.5MH/s which didn't find any block on 36 hours of mining...

it is open source miner... but if with 53MH/s i didn't find any block in 12+ hours why i can find with 75MH/s ?

i have driver 382.53 , you can see in screenshot on AfterBurner

no one block since 12 hours ago on 5 x GTX 1080Ti ... your SP-Mod can do more if no block has been founded???

https://s13.postimg.org/54520ajyt/Screen_Shot_2017-07-06_at_21.12.00.png

no block since 12 hours ago on 5 x GTX 1080Ti ... why???

http://s13.postimg.org/54520ajyt/Screen_Shot_2017-07-06_at_21.12.00.png

you will find in boot menu . if you read the manual you will know it!
http://i.imgur.com/zlP5klz.jpg

[Card]: Zotac GTX 1070 AMP! Extreme Edition
[TDP]: 85%
[Core]: +110 (2076)
[Memory]: +750 (9296)
[Fan speed]: 60%
[Temp.]: 56°C
[Whole system]: 262w (212w card only)
[Mining performance]: Ethash 30.3 MHs + Sia 705 MHs / Ethash 30.3 MHs + Decred 700 MHs / Ethash 30.3 MHs + Pascal 435 MHs / Ethash 30.3 MHs + Lbry 35.2 MHs
[Miner]: Claymore 9.6

[Card]: Zotac GTX 1070 AMP! Extreme Edition
[TDP]: 90%
[Core]: +110 (2100)
[Memory]: +750 (9296)
[Fan speed]: 50%
[Temp.]: 56°C
[Whole system]: 250w (199w card only)
[Mining performance]: Equihash 510 - 520 Sols
[Miner]: EWBF 0.3.4b

[Card]: Zotac GTX 1070 AMP! Extreme Edition
[TDP]: 80%
[Core]: +130 (2126)
[Memory]: 0 (7796)
[Fan speed]: 60%
[Temp.]: 57°C
[Whole system]: 254w (204w card only)
[Mining performance]: Skein 595 MHs
[Miner]: ccminerAlexis78

This is maximum what i can do with power consumption on Zotac GTX 1070 AMP! Extreme Edition https://ibb.co/bK5Nk5