I'm not sure currently it will help Trainz but its reported in a number of sources that NVIDIA intend extending their raytracing support to GTX 10xx series GPU's however before you get too excited there is a catch and its in the form of a performance hit. Detail linked. Peter:
https://www.techpowerup.com/254528/...ytracing-dxr-support-to-many-geforce-gtx-gpus
https://www.techpowerup.com/254528/...ytracing-dxr-support-to-many-geforce-gtx-gpus