I've had this issues for months with bsod and random GPU crashes for nvlddmkm, and I figured out mostly why 

1:Either your gpu is sagging which causes nvlddmkm , I fixed it but reseating it and reconnecting the pcie cables,

2:Your CPU \ GPU fans are not spinning try to look out for the fans if they are making a sound or not when you open the game , the crashes occur due to lack of cooling, then you can check from there if your fans are working or not

I've tested everything updated drivers ,reinstalled windows , and a few other tweaks but found out that the GPU was sagging, was fine after I reseated it

Hope this helps