Confirmed.
Distro: Linux Mint 19 Tara
Processor: AMD Ryzen 7 1700
GPU: GTX 1070, Nvidia proprietary driver 396.54
RAM: 32GB
Kernel (custom) - 4.17.14 (optimized for Ryzen)
Resolution: 1920x1080
Proton 3.7-3
Works perfectly fine on Proton 6.3-8.
proton 6.3-8x1 2022-02proton 3.7-3x1 2018-08
Everything working fine in this one too (I suspect all Spiderweb software games could be whitelisted as they all use similar tech)
specs: https://gist.github.com/Cuddlypuff/a518019d119623d9a1b7552e284c1f6d