Alienware AW2521HF Service menu & Problems

[Extol 3D]

So I am here because I started experimenting with this monitor inspired from this thread viewtopic.php?f=2&t=5512 and I do am so brainfucked that was the only place seemed to inspire me create an account here and actually try to figure what is going on.

So hello everybody and stay unblury!

On topic:
BEFORE I enter the service menu for first time my monitor native 240hz resolution was displayed in AMD diplay information tab as 239.760 (I do stronly believe this exists on purpose so movies can be played without judder). Movie native Hz is 23.976 (24000/1001) FPS. That is also confirmed in Media player Classic Info screen on a lot of movies i tried. So 239.976 = 23.976 x 10 and that makes sense. I did not check actual hz on other resolutions (144,120 etc.)That for both display port and HDMI.

Now AFTER I entered the service menu for first time and exit it somehow changed this resolution for ever and now it is displayed as 239.757 (!) (Tried reset driver, monitor drivers, CRU resolutions)
That is also confirmed in CRU and MADVR. That for both display port and HDMI.

Another odd discovering is that MadVR in monitor information tab is displaying different information about the same monitor from pre enter service menu and after. It is almost like it is different monitor.

Anyone here with same monitor that did not enter service menu and want to share his timmings and information would help a lot! I really am confused to bone and the fact that I my knowledge is limited does not help me. Any kind sir that could shed some light in this situation? Thank you in advance.

Here are some pictures of what is going on. https://imgur.com/a/ysJczHn

[Extol 3D]

Anyone boys? Stock timmings would really help confirm this as I did not save any information pre enter the service menu.

[abhyudaytiwari]

My timing is 239.757. Aw 2521hfl

[doncalculator]

Hey, can you please tell me how did you enter the service menu? Thank you!