We just released fixed miner version in our simplemining.net Operating System:

2019.01.16
grin-miner-v1.0.0-fix1 (added 4th option with possibility of select plugin: cuckaroo_cuda_29 (default if no specified), cuckatoo_mean_cuda_gtx_31, cuckatoo_mean_cuda_rtx_31. Also fixed gtx_31 plugin for lower memory usage)

Is it now working with less memory ?