Witcher 3 Wild Hunt

What works

Music, video, gameplay, controller with rumble support, complete gameplay walkthrough was possible without crashes

What does not

Some monsters are invisible, in some cutscenes faces are invisible, in-game time may run slow in complex scenes giving physics a slow motion effect - nothing game breaking, tho

Workarounds

What was not tested

Playing with keyboard and mouse

Hardware tested

Graphics:

• GPU: Nvidia
• Driver: proprietary

Additional Comments

The bug reports include some patches for above mentioned glitches. But the problems were not completely eliminated, e.g. the invisibility bug is still there. The game was played and completed through different versions of wine, starting with wine-staging 2.15. As of wine-3.2, the game made great progress wrt performance and graphics quality.

The wine version used is based upon the official ebuilds from Gentoo (patched to compile wine-3.3 because Gentoo is still stuck at 3.0) with custom cflags optimizations:

CFLAGS="-O3 -march=native -pipe -fomit-frame-pointer -g"

package.use:

app-emulation/wine-vanilla dos staging netapi perl pipelight pcap gstreamer custom-cflags kerberos

Some hacks were applied as patches:

https://github.com/kakra/wine/...

Currently with wined3d, The Witcher 3 is still affected by CPU-GPU buffer maps synchronization issue (bug #44315). It severely degrades performance.

Using dxvk instead of wined3d is the best course of action, since it performs very well, and also provides perfect rendering, as long as your Vulkan driver supports VK_EXT_transform_feedback extension.