Ansys Employee

Please see ANSYS Platform page at: https://www.ansys.com/it-solutions/platform-support
Xming is not officially tested or supported.

Additionally, all tested remote desktop environments utilize server side rendering. 
This requires a capable video card on the remote machine and software configured to utilize the hardware.

You may consider installing VirtualGL and starting ANSYS applications with:  vglrun
That is a requirement when using VNC so, it may resolve Xming compatibility issues.

note: this suggestion does not imply Xming support.