I just switched to the dstm client and having zero issues with my 1080ti. Actually Its OCed more and clocked higher than I have ever been before!
Before using a different miner (EWBF) I managed around 700 H/sec with just a +100 on the core. No benefit to clocking the memory or anything else higher. Now I can run +200 Core / +500 Mem and even run at 90% TDP and get 752 H/sec! If I run at 100% TDP I get around 770 H/sec at these settings. I have yet to test it further but I'm sure I could tweak it even more. So I'd say with this at v0.5.8 you can mine at higher speeds and better output.
Could you share a screengrab of dstm window running?.. I'm trying to compare my settings... Might be because I'm using 1070's and you are on 1080ti.
thx
1060 6GB Settings/Results
https://ibb.co/eJp5HR1080TI Settings/Results https://ibb.co/ca0ZBm
hmm... that speed crashes mine for some reason. I have to keep my core clock around 140 to keep it stable. win10 with 4 asus and 2 evga 1070's
Now if I go to +250 on the 1080TI, it will crash (takes about 1 hour). I have not hit the limit on the 1060s in this rig yet, the other one hits +230 on the core.
Might just be the stable limit for it. Have you tried to reduce your TDP (Power Limit) at all? I'm able to push higher clocks by dropping the power limit.