Patch 2.1 did not fix the FPS degradation and memory leak. It's still as bad for me.
Below 40 fps and over 3GB ram usage after just 2 hours.
AMD Ryzen 5 1600X
16GB 3200Mhz ram
Windows 10
Nvidia GeForce GTX 1060 6GB
DxDiag attached
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Proof:
FPS before:
https://i.imgur.com/OEH0BgO.jpg
FPS after restart:
https://i.imgur.com/RDjZz0z.jpg
RAM usage before:
RAM usage after restart:
DxDiag.txt