Hey everyone,
I have been working on a project for a few months not. It is a VR archviz project situated on the hills.
I have been successfuly able to optimize and profile the VR experience to constantly hit 90 fps despite having particles and for clouds and snow as well as having a 64 square kilometere terrain extracted from GIS data to be accurate. I am using 4.14.3.!
Just yesterday I built a new machine which is to be a substantial upgrade from my previous one.
**Old machine specs: i7 4770k 16gb ram 980ti 2 tb 7200 rpm hdd.
New Machine specs: i7 6800k 16 gb ram 1080ti and 500 gb SSD.**
As expected I got a significant performance boost (atleast in terms of loading times) from the SSD. But to my surprise, my project is now running at 40fps in editor which would run at 120fps smooth on the old machine in editor. Because of this huge drop, I didnt even bother setting up my Oculus on this new machine.
I did however seem to find the reason for the heavy drop in FPS. It has to with some of the particles for the snow (which I got from the weatherVFX pack on the market place). On the old machine these particles would give me no probelm, but on the new machine they seem to bring it to its knees. Even when the particles are not being drawn (visible is set to off and hidden in game is set to on) they seem to be killing the FPS. On deleting these particles, fps goes back to 120. I am attaching a screenshot of my GPU profiler and my world outliner.
I KNOW NOTHING ABOUT PARTICLES.
I hope some one can shed some light on this. I cannot believe that the 1080ti behaves so much worse than the 980ti out of the box.