I’ve no experience with ThinLinc - in fact, I’ve very little experience with VNC solutions in general. The main thing to verify is whether it can handle OpenGL - which is not a given. Also, as mentioned in the docs, make sure the server has a decent enough graphics card and driver to do the rendering. Personally I always use the local install option (running MRView locally and accessing the data over a network filesystem/share), but I do realise that this might require quire a bit of maintenance to set up on users’ systems…