Opprinnelig skrevet av Nixxes:

Hello everyone,

We have just made public a new version of the PC version of Thief, v1.7 build 4158.21 This patch will be applied by Steam automatically when you next start the game. If your game does not update, please restart the Steam client.

This patch will address the following issues.
Made several AMD Mantle specific optimizations.
Fixed several issues with AMD Mantle and specific hardware configurations.

While we expect this patch to be an improvement for everyone, if you do have trouble with this patch and prefer to stay on the old version we made a Beta available on Steam, v1.6 build 4158.14, that can be used to switch back to the previous version

Step 1: Go to your STEAM library and select Thief in your game list
Step 2: right-click on the game and go to properties
Step 3: go to the Betas tab in the properties menu
Step 4: select version_1.6 and press ok.

This will set you back to the original released version of the game.
We will keep monitoring for feedback and will release further patches as it seems required. We always welcome your feedback!