Why is it, I wonder, that P3Dv5 is displaying my amount of GPU memory as 5GB where in reality my GTX 1060 has 6GB on board? Can any of you shed some light on this, please?

Thanks,
Hans

Because P3D only displays the amount it has allocated for its own use. It won't display the full amount, because the rest is still reserved by Windows for itself and other applications. 

I really hope the hotfix makes the game usable for me and my 1060.

What are your system specs?  

I think my 1600 mhz  memory speed is holding me back big time. I can't seem to find faster memory, so will hold out and buy new system soon.

https://www.prepar3d.com/system-requirements/

5 minutes ago, sfgiants13 said:

I really hope the hotfix makes the game usable for me and my 1060.

In the meantime, if you feel like experimenting, the latest Windows 10 build (2004) actually allows P3D to provision even more VRAM, so you get a bigger overhead. 

If you look at any system monitor you will see that at idle with nothing running Windows will use a fair amount of VRAM. P3D is showing how much there is available to use. 

8 minutes ago, sfgiants13 said:

I really hope the hotfix makes the game usable for me and my 1060.

Others, here who have a 1060, depending on their personal in-sim settings, are running with v5.0, so it is doable.

31 minutes ago, Sethos said:

Because P3D only displays the amount it has allocated for its own use. It won't display the full amount, because the rest is still reserved by Windows for itself and other applications. 

Thanks, all clear.

I'm having 3gb 1060 and running ngxu + uk extreme scenery + global + AIG 100% traffic around 30-40 fps. No AA though. Disabled autogen buildings too as never fancied them - misplaced and ugly. On V5 it takes VRAM hit too.

Here's to hoping.  V5 is installed with some already compatible scenery.  None of my planes are so I'm just waiting for more installers to get released as I slowly install things.  Guess I'll have to get the NGXu if I want that plane.  Or just fly the word not allowed out of whatever installer gets released first.

15 minutes ago, Sesquashtoo said:

Others, here who have a 1060, depending on their personal in-sim settings, are running with v5.0, so it is doable.

P3Dv5 is running fine on my system, I only was curious to know why only 5GB out of 6GB was being displayed 🙂

12 minutes ago, Sesquashtoo said:

Others, here who have a 1060, depending on their personal in-sim settings, are running with v5.0, so it is doable.

I'm running a 980ti and I've yet to have my VRAM usage go over ~4.1GB. This is with ENVTEX, ORBX regions/LC/Base and add-on planes.