Latest version 2.14.3 more less H/s !
With this version 2.14.0 I got about 700 H/s:
* ABOUT        XMRig-NVIDIA/2.14.0 gcc/5.4.0
 * LIBS         libuv/1.9.1 CUDA/8.0 OpenSSL/1.1.0j microhttpd/0.9.51 
 * CPU          AMD Ryzen 5 1600 Six-Core Processor             x64 AES
 * GPU #0       PCI:0000:08:00 GeForce GTX 1070 Ti @ 1683/4004 MHz 34x57 0x0 arch:61 SMX:19
 
Using latest version XMRig-NVIDIA/2.14.3XMRig-NVIDIA/2.14.3  only 347.1 H/s 
with same hardware and same command line:

 ./xmrig-nvidia --api-port 6699 --api-worker-id K5 -o pool.supportxmr.com:5555 -u xxxx  -p K5GPU:antonioxxx@gmail.com -k --donate-level 1 --variant -1