A model that can only generate frontal to profile views of heads would be quite small, I can totally see that kind of thing running on current consumer GPUs, in real time. Near real time is already possible with SDXL-based models with some speedup tricks applied as long as you have a mid-range gaming GPU and those models are significantly more general. It’s not like the model will need to generate spaghetti alongside with the head.
A model that can only generate frontal to profile views of heads would be quite small, I can totally see that kind of thing running on current consumer GPUs, in real time. Near real time is already possible with SDXL-based models with some speedup tricks applied as long as you have a mid-range gaming GPU and those models are significantly more general. It’s not like the model will need to generate spaghetti alongside with the head.