Ok… lets see…
(Assumption - you have done the key things to do I suggested above)
The player.log isnt showing anything obvious that could explain the issue you are having - I am not a Unity dev so I just look for things that seem out of the ordinary when compared to other logs I have seen… i.e. there are no major DirectX errors or things that the game is reporting that could be the cause of the freezes that I can see…
Alt-tabbing while the game is doing quite a bit of processing like loading a new map etc does sometimes cause a “not responding” kind of windows message but for me chosing to wait for the program usually resolves after a few seconds… From what I have seen, the higher the in-game settings the more this tends to happen… Normally however, I have no problem alt-tabbing if my char is just sitting in town or on a map not interacting…
Your in-game settings are ok for your hardware and if the game was not in beta and had been optimised I would say they are fine… However, I am assuming you are playing on your Predator monitor which has a refresh of 144hz - with vsync enabled in-game, you are effectively only limiting LE to 144fps @ 2560x1440 with Medium settings… In my experience, this is probably ineffective at keeping LE from maxing out your GPU and potentially causing instability/freezes & other things like stuttering… Leaving all other settings as they are, I would suggest that you set your fps limit to something like 100fps and then check your GPU usage while standing still and doing nothing in the End-of-time location… if your GPU usage is high - 80%+ then I would adjust the fps down until your usage is around 60-70% doing nothing (because of your higher resolution, you could also drop quality settings to lighten the load and keep the fps higher)… I have found from helping others and playing the game myself, that this seems to leave enough headroom for the GPU to spike up in busy moments without causing stability issues… Obviously this all depends on each persons hardware/setup/cooling etc… but its important to find something that prevents your GPU from being redlined 100% of the time by the game. I am sure that once the devs deal with the optimisation, then this will be less of a concern but this ‘workaround’ seems to help most players.
Another thing that other players have noticed regarding freezing / stuttering is the Fullscreen mode vs a maximised window… Just as a test, I suggest you try testing for a while on the other mode to see if it makes any noticeable improvement… This could also impact on the alt-tab that seems to cause the freezing for you.
Your dxdiag is not showing any obvious issues with OS patches and device drivers… That all looks ok…
The diagnostics (end of the dxdiag file) dont show any LE crashes which means that something external to LE is probably causing the freezes…
There is one particular error with WUDFHostProblem…
The additional information seems to refer to your Logitech Headset
(HID\VID_046D&PID_0AAA&REV_0031&MI_03&Col02)
as having some sort of issue… Depending on the devices involved, WUDFHostProblem errors apparently can cause random freezes and system resets… I would suggest that you look into this one more closely - “View Reliability History” on your machine and see if there is any more information AND based on a Google search on the code above, I would suggest you check if your logitech drivers/software are up to date…
Another thing, it is showing lots of OneDrive crashes that you might want to check… If these are happening while you are playing they could be messing with things. OneDrive is crashing on the ntdll.dll which handles basically all the device dlls on Windows so best resolve this one.
Based on the odd errors I would also suggest runningSystem File Checker just o make sure that your Windows System files are all ok… Usually makes no difference but occasionally it will pick up some corrupted file etc…