[OnePlus 6 ROMs, Kernels, Recoveries, & Other Devel] robertobiundo:
Ok. I've been using this as a daily driver for a week now ( someone has to :P ) and here are some notes.

Keep in mind that this are not complaints ( XDA users normally take things too personal in my experience ). They are just notes of my current experience of an ALPHA ROM. ( yes, alpha, do not expect to rely on this ROM just yet )

I provide links to the relevant extra files I used.

I will keep this updated as ROM updates appear.

If you know any other issue that bothers you and would like me to add it to the list please reply to this post, I'll test it myself and add it here. Hopefully the developers will look at this post and use it as a guide. Again....just trying to help.

1. Performance: It's fast and snappy, but so are most ROMS on a OP6. The good this is...no complaints

2. Gapps: Tried several and several combinations as well. The best so far ( for me ) are NikGApps Macro package. Without the macro package I did not get the setup screen and my Chrome would not use the same account as the rest of the apps, but then complained that the account was already there.

Granted, this will add some apps that I do not really use, but it does on the other hand include the Assistant, and replaces the stock SMS, Phone, Contacts and Clock apps with the Google ones ( a plus in my perspective, but take it as you wish ). No problem with the SMS app that some users have reported on.

These GApps also include the Pixel Launcher ( if that makes a difference for you )

3. Camera General: Here is where things go weird. Using the stock camera is...well....OK....it crashes randomly and the post processing is quite minimal not taking the best advantage of the OP6 camera.

Using the GCam on the other hand improves things but at the cost of some overly saturated colors and LOTS of crashes. The best experience GCam was with the GCam_7.3.018_Urnyx05-v2.1.apk since the latest 7.4_GCam_MJL_v5.0_Miniqueta.apk caused all sorts of weird behaviors with Google Photos including despairing photos when clicking from the camera. Seems like the camera takes a temporary photo, creates a file and the reopens that file to edit it and saves it again ( something that Google Photos does not like ).

Be aware that using any camera but the stock OOS camera will render your second back camera useless ( not that it was really that special anyway since OOS only uses it on portrait mode, something that GCam does better with only one camera ) and expect random crashes as with the stock camera as well ( less often, but about 10 in 5 min )

4. Camera Video: Ok, good quality with both stock and GCam

5. Camera Slow-Motion: Does not work, the camera opens, the video is taken, but it's only a normal rate video, opening it in gallery or Photos will show you a really choppy video when you get to the "slow" part of it.

6. Wifi: Ok, speeds are just as you would expect. But as with any custom ROM I tried, range seems to be lower than the OOS in 5 Ghz. Not really noticeable though

7. Bluetooth: Works just fine. Again, same as with any other custom ROM ( specially Syberia ) there is some more cracking in my BT Headset sound if the device is in my pocket. Seems like the OOS has some boots power on Wifi and BT. But again, as good as you would expect. Not bad, not amazing either.

8. GPay: Cannot test

9. Root: No root solution has worked for me. The default Magisk as found on their Github will plainly cause a bootloop ( even the beta 21 ) and the provided on this forums will actually root the device ( as shown in magisk manager ) but when the apps request root access they are all denied and they don't even show in Magisk's manager sudo apps list.

10: Launcher. The default is QuickStep. A nice clean and fast manager with little customization. The one my NikGapps Macro install is the PixelLauncher ( about as bad in customization but with a more Pixel like experience ). Again take this as you wish since you can always change it. A note here. If you install any Launcher from GooglePlay and you use gesture navigation instead of the navigation bar. You WILL get a weird animation when trying to show all running apps by pulling from the bottom center. I do not think this is this ROM's fault. Seems like the launchers need ROOT access ( or installed as system apps ) in order to make this gestures work. Tested launchers include Nova Launcher, Evie Launcher, Niagara Launcher and Lawnchair 2.

11: Colors: As stated by other users, it seems to use the sRGB gamut, in general colors look OK and not overly saturated like when you get with other Custom ROMS. But this is a preferences thing. I could not find a way to change this, I imagine this will come in future updates since other POSP Roms have it.

12: Battery: Bad...Hey!...It's an Alpha ROM, what would you expect. The device itself it's doing a proper deep sleep according to a couple of kernel manager apps but the battery will steadily decline at a rate of about 4-5% per hour ( without any usage ). SOT is also bad for now.

All of this is expected to change in the future as the ROM matures. For a reference, my usual usage that would get me 30h-35h battery ( from 100% to 10% ) on the OOS here gets me 16h - 20h. Quite the downgrade. Again. This is expected to change in the future.

As a side note. I have no way of testing if this is due to the GApps I added. I don't see why this would be the case, and it does not show in any battery report. But it is still an option. Since using the device without GApps is pretty much useless I'll only try with them installed.

13: OOS Custom Features:

13.A: Game Mode: NO

13.B: DC Display Dimming: NO

13.C: OP6 OOS Camera App: NO

13.D: ZenMode: NO, you can use Digital Wellbeing if you want

13.E: OOS Memory optimizations: NO - A note here. I do not think this is actually a 'feature´ more than OnePlus marketing around a Kernel optimization. So it may as well be there, you just will never know.

13.F: Do Not Disturb Slider: Works, you just don't get the nice popup with the action feedback. You can see it working on your status bar ( a vibration icon appears )

13.G: Bottom screen navigation features: The one where the back button is not on the left and right of the screen but at the bottom left and right: NO

14: Other missing things that seem to be available in other POSP Roms

14.1: Status bar customization, including battery % and battery icon - NO

A personal warning. Do not install flashable apps ( like magisk ) from unknown sources, including XDA users. Always go to their site and get theirs. Root apps can potentially harm / make your device unsafe to use. Including viruses and stealing of personal information

Links:

GCAM 7.3 GCam_7.3.018_Urnyx05-v2.1.apk

https://www.celsoazevedo.com/files/android/p/gcam-oneplus-6-6t/

NikGApps NikGapps-macro-arm64-11-20201010-signed.zip

https://sourceforge.net/projects/nikgapps/files/Releases/NikGapps-R/10-Oct-2020/