I spent the weekend playing the free to play and would love to buy the game now but can't with the current system performance. It took me several hours of tweaking to get it to average 30 to 40 fps. Most of the time it's pretty unplayable.
I'll happily cough up the cash if it's playable.
I'm running a MSI 65F Stealth, i7 8750-H @ 2.2GHz, NVidia RTX 2070, 2TB SSD, 32GB RAM DDR4-2666.
It plays pretty much every game I have (Black Ops 4, Apex, etc.) on high or ultra with no issues.
Sandstorm is painful.