awesomeminer adds a extra x16r when mining x16r , this causes the miner to fail.
this is what it looks like:
t-rex-0.6.10-win-cuda9.1_1\t-rex.exe x16r -a x16r -o stratum+tcp://X16R.eu.nicehash.com:3366 -u xxxxxxxxxxxx -p x --api-bind-http 0.0.0.0:4028
try to use it without defining intensity, it is more stable