I'm not used to working with huge scenes, I do mostly product rendering, but my latest project requires using a client-provided model with about 2 million polis. The viewport is unusable at around 1fps even with the quality at the lowest setting. I think the viewport is all GPUs work, but Windows GPU monitor shows a mere 5% utilization. Same for CPU. 5-10% and about 30% ram. So my system does not seem to be overloaded in any way, and yet, the viewport is unusable. I'm running a GTX1080 in case it helps to know, max 2017.
I know the right thing to do would be to use proxies etc... but this is a client model and I need to work on it fast, no time to rebuild.
Thanks.