Please note that in multi-GPU configurations if the display card is also used for rendering, this will cause the viewport in Thea Studio to possibly stutter because core utilization is reaching peak levels while not allocating enough processing capacity to handle the display effectively.

It is very important to note that the display frame buffer obviously requires some GPU memory and therefore if scene resources exceed available memory provided on the display card, Thea Presto will not continue rendering on the display card and instead select the remainder GPUs (considering they have remaining memory that can hold the complete resource data buffer).

In certain cases it is useful to assign one graphics card only for real-time viewport or possibly exclude the display card during IR and preliminary production renders and include it only when moving into full production render stage where the user is not required to be present.