https://bitcointalk.org/index.php?topic=5289066.0Low 40's is normal for the 1080ti and it will only get lower due to a known bug suffered by the 10x0 series excluding the 1070ti where it was fixed.
1080Ti has gone from 55 to 43mh in 5 years and 1070 has gone from about 33mh to 25mh.
I thought the lack of update for the 10** series is why they lose hashrate performance easily? What is this bug update that you are talking about? I doubt the gtx1080ti can use 470 and 471 Nvidia drivers, you need to download the last old driver which I believe it's the 460 series, I don't know what Nvidia did this.
Imagine the DAG data is a bunch of buildings in a city and we only have the phone number. We need an address book to map phone numbers to addresses -- this address book resides in the TLB.
Unfortunately the size of the address book has exceeded the TLB size, so we no longer have fast look-ups for the entire address book - parts of it have to be recalculated (cache miss).
NVIDIA figured a smaller TLB size was enough to last a while (512kb is enough for anyone). For gaming thats true -- not so much for ETH HASH.
So theres no we to go back to full performance unless the DAG size is reduced.
Still I'm trying to get back to low 40's for eth hashrate, still at 37 Mh/s so there is room for improvement. I'll try upgrading driver version and cuda version and see if that gets me the last few Mhs to get to 43 Mhs..