[09/01/2017] Freezing issues on NXT - Resolved
Update 09/02/2016 - please visit our dedicated NXT support centre pages for information on how to improve your NXT experience.
We are aware that some players are experiencing intermittent freezing when using the NXT client. We are working on getting this resolved as quickly as possible.
TEMP FIX: Disabling VSync in the Graphics Options should prevent the issue in the meantime.