I'm having the N/A issue. Running 'cd /usr/local/emhttp/plugins/gpustat/ && php ./gpustatus.php' gave a fatal error. Running 6.11.5, latest Nvidia and GPU Stat plugin. Plugin was working fine since it came out. While running the commands i've attached, there was an Emby transcoding going on.
gpustat.txt
gpustatus.txt
nvidia-smi.xml