Like many here, patch 1.6 brought a permanent crash (black screen, have to do ctrl-alt-del, then crash reporter...) to my game.
My game crashed on average every 2 minutes (yes, two minutes !). And pressing 'E' (my button to interact with npc's, wayshrines,...) had a 50% chance to cause a CTD.
My PC is an intel i7, windows 7 (but it's the 32bit version, not 64 !) and an nvidia GTX 760 graphics card from asus.
I tried all the usual stuff in such case : fiddling with the game settings, updating drivers,... nothing helped.
But, now I found a way that worked for me, hopefully for others too.
In short :
- Use opengl instead of directX. You need to modify your UserSettings.txt for that
- Do not start the game with the launcher. Make a shortcut to the game client (eso.exe) and use that.
- Run it as an administrator
- I also had to disable visual themes, but that might not be necessary for you
Be aware that you can have a very strange login-screen, and the loadscreens (and their text) are... a mesh of pixels.. And the game does not look as beautiful in opengl as it does in directX.
BUT IT WORKS !! I had no crashes for several hours !!
If I put directX back in the UserSettings.txt, the game crashes almost immediately !
Longer instructions for the not so techy:
1) opengl
goto your 'My Documents\Elder Scrolls Online\liveeu' (might be livena if you are on the NA-server)
Make a backup of the UserSettings.txt you find there (in case you break something)
Open the UserSettings.txt with notepad or notepad++
Locate the following line

SET GraphicsDriver.7 "D3D11"
and change it to :
SET GraphicsDriver.7 "OPENGL"
Save the file and exit notepad
2) shortcut
goto the location where you installed the game
locate the client, it will be in this subdir : The Elder Scrolls Online EU\game\client (replace EU with NA if you are on the NA server)
The client is the 'eso.exe', create a shortcut for it (on your desktop or a games folder...)
3) admin
Right-click the shortcut and choose properties
Select the tab 'compatibility'
place a checkmark on 'Run this program as an administrator'
Note : I had to also check 'Disable visual themes'. But this may not be necessary for everyone.
I hope it works for you too.
To ZOS:
I made a ticket with my systemreport yesterday (t: 150305-001815). You can add this 'workaround' to that ticket, or I'll make a new one.
Can this info be given to the tech department ?
EDIT : I got a reply from ZOS. They say I can also switch to DirectX 9 by using DXD9 instead of OPENGL. But when I tried it, the crash reporter came up as soon as the loadscreen after character select went away.... so I reverted back to opengl.
Let's hope the coming patch (tonight) will help, but I didn't read anything in the patch notes about this issue..