Custom Resolution Utility (CRU)

[DmitriyBlade]

Only after i select "3. enable settings for selected display model" in nvidia
i was able to overclock further than my monitor default 165hz to 182hz(if i change it to 166 it starts artifacting)
If i overclock via nvidia custom resolution, my max was 174hz(if i set 175hz ask do i want to save - yes, and it won't save)

i copied settings from 165hz profile, changed only refresh rate to 182hz, seems working fine so far

Question:
1)Does messing around with Front porct/Sync width/Back porch etc gives you any latency decrease?
(or i should only use refresh rate overclock)
2)My Display cable kinda old(from previous monitor), but quite lengthy, if i order a new one, can i improve my 182hz limit further?

ps seems good for 200$ china 3440x1440 34' IPS display