Thanks to you all for helping me ramp up on iClone and on this project!
I had a lot of issues getting ok FPS on the iClone to Unreal recording using "take recorder". Just following the things in the reallusion videos was not enough. I tried a whole bunch of experiments, and finally got it to work well! I now have 80fps in unreal and close to 60fps in iClone. I read on forums that a lot of people had similar issues. So, figured I'd pay it forward for so many of you helping me with my questions - by sharing some of the things I learned.
(1) Settings on the nVIDIA control panel for the GPU - These make a huge difference. I changed the application settings for Unreal and iClone. Changed the power management mode to "max performance" instead of the default normal. Changed the low latency mode to "ultra" instead of the default "on". My performance was being limited by Unreal fps, so I set a max frame rate for iClone fps so that both iClone and Unreal go above my threshold for being able to record.
(2) Turned off visibility for everything - Every single character and prop in both iclone and unreal was turned off. This burned less system resources and allowed greater FPS.
(3) 2k resolution vs 8k resolution for metahuman - did not make a difference to fps performance. I spent time exploring this option, thinking a lower resolution would improve FPS performance. It did not.
(4) Turned off fixed frame rate on unreal - my character was standing in one place. I read in one of the forums that this improves performance - people had data for that.
(5) Transferred all props, characters and animations other than the metahuman using FBX transfer - the metahuman was the only one on live link. I added props and other characters and animations after the FPS sensitive metahuman recording was completed. Not sure how much benefit this gave, didn't do A/B testing on this.
(6) All settings on unreal were set to low - for engine scalability, material quality, etc
(7) I also installed the nvidia's DLSS plug in which is supposed to improve GPU performance - don't know how much impact this made, but thought it wouldn't hurt. Didn't A/B test this with this transfer though.
In addition, I tried all the other tips mentioned in the Reallusion video to boost fps:
Unreal Live Link Plug-in Tutorial - How to Increase FPS - YouTube Also, my system configuration is Intel i9, nVIDIA GTX 3080, 64GB RAM, 1TB SSD. Wish I had an AMD Ryzen 9, that's supposed to be better vs the Intel i9 for these sort of things.