Video card crash GTX1080Ti- please help

My spec is i7-6700K 4.00GHz, 16GB, GTX1080Ti, Win 10 Pro
The latest D5 render -

I keep facing the issue with rendering.
Where I render the res exceeding 1000 in width or height the system crashes at 80% of render progress. I installed the latest card drivers from Nvidia.
It did not help - it has even worsen the situation - in preview mode at high level it stops refreshing from time to time.

I have no idea why it happens and how to fix it.
Please help.

Hi there,

Please try to follow the steps below -

  1. right-click to run with admin
  2. Close D5 after entering the welcome page
  3. Restart your PC
  4. Start and use D5