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

[stej]

I'm trying to edit a block that's not editable with cru (greyed out).
The only solution I see is exporting a .bin dump of the edid and editing that block with an external editor.
The problem is that the edid reported by the monitor is not fixed from what I can see.
When I change certain settings on the monitor, the reported edid changes. I dumped the edid between such setting changes and verified that the binary files are different.

Am I correct to assume that if I import an edited edid with cru, it will override everything the monitor reports, essentially nullifying the monitor's ability to switch configurations?
And if so, is there a workaround for changing the specific block only and not affecting anything else?