Mac Pro 2019 duo graphic card setup with red windows

Hey guys i got a Mac Pro 2019 setup with two vega 2 gpu setup, but i keep has this issue (maybe just me since no one would stupid like me got these two overprice gpu), and i keep having red window when i move the td window from gpu 1 to another gpu 2 linked monitor. see picture here :


The Problem is that TOuchDesigner is only running on one GPU. So everything you see is kept in the memory of that specific GPU. So when you move the Window to the other GPU you now have the problem that this GPU is not aware of what it should display as all the draw calls and ressources are located on the other GPU.
Check out this post from the documentation: Using Multiple Graphic Cards - Derivative
TLDR: Two ways of using more then one GPU: Bind Process to a specific GPU and have two instances running or use MosaicSLI using an NVLINK-Bridge to transport Data from one GPU to another.
Both described for Windows and Nvidia.

TD on MacOS is basicly like the first free shot you get from a dealer. Its to hook yoo, but for really using it you want to use NVIDIA and Windows to get the full featureset.

Yeah, it will just run on the primary GPU you start the process on, same as on Windows unless you use multiple processes. One solution would be to run both monitors off the 1 GPU since you can’t access the second GPU anyways.