Right now I do experience the following issue: The moment I launch Touch Designer my graphics card gets under heavy load (starting with the standard ‘new file’). You can even delete all nodes and pause the timeline and the load will stay up. Only by switching off the cooking switch in the top bar will calm down the gpu.
I tracked down the start of this behaviour from the archived downloads to build version 099-2018.26450. In build 099-2018.25850 this is not happening. Also the latest experimental build#2018.42310 and its predecessor have the same behaviour.
Experienced on a MacBook Pro 2017 with an AMD Radeon Pro 560 build in.