@ray said:
have an rtx 4090 and an rtx 3070 (externally mounted) and would like to use these cards also
Unfortunately this type of multi card config isn't officially supported. Primarily because we can't possible test every configuration, so we don't have 'best practices' outlined.
With this type of config you will undoubtedly run into a bottle neck somewhere, although it may or may not impact your project. Generally 1 primary dedicated gpu will be assigned to Isadora by Windows, and this is where vide textures etc are loaded to for processing (fx, mixing, mapping etc) then the finished texture will be sent to the GPU physically connected to the output device (projector etc).
So, transfer speed to these output cards is often where performance hits are seen.
As far as the stage IDs/Numbers. Isadora uses the connected displays as Windows reports them, so if windows moves anything, Isadora will see them differently.
I know others have used edid hdmi emulators, to lock device to specific positions.
I think this post has a fair amount of info on this: https://community.troikatronix...
