i don’t know exactly how this game uses resources, but i can tell you, i am still playing with my 1080ti and i have had little issues. i assume it is my 32 GB of ram (split in 4 channels) that helps a lot.
from all the reports i have seen here, and from my experience as a IT hardware consultant, i can only assume, that there are some memory bottlenecks.
i know this does not help initially, but for everyone setting up a gaming PC or upgrading their pc i can always just recommend using all available memory channels. 4x4 GB is always better than 2x8 GB. use your available lanes on your motherboard.
and for short term help, i also can respect the decision to not wanna share your log files, but other people reported that following the advise seen here: How to Make a Performance Capture has helped them.