Sniper Ghost Warrior 3 is another epic first person shooter where you play as a mercenary near Russian borders in an open world. Complete missions and return to your hideout to upgrade your weapons add accessories and replenish your health. Awake the next day for another bloodbath as a Sniper, Ghost or Warrior. You can also explore by driving vehicles or using your trusted drone and find secret stashes and secret sniping locations.

https://www.gog.com/game/sniper_ghost_warrior_3



As you can see in the above video, Sniper GW 3 plays pretty well in PlayOnLinux with Wine.

Sadly there is a problem... When I start a new game it runs great with high frame rates like a native game, but when I quit and reload the game the frame rates drop to the point of unplayable.

I've tried different versions of Wine, Wine staging and even Proton... nothing seems to fix this problem. I've researched online and even posted on reddit about it and no one seems to know. I did find that Windows gamers had some issues with a memory leak but those solutions didn't work in Wine. So at this point, the game is unplayable, which is really sad because it runs so well. I don't know what happens when you quit the game, but something really affects the performance.

Specs:
Mint 20.2 64-bit
GeForce GTX 1060
Nvidia 470
PlayOnLinux 4.3.4
Wine 6.0 64-bit