When you get to the tree area you'll see a platform swinging through a tree trunk and instead of being suspended from an overhead rail its ropes float in the air. See also the thread in the game hub.
http://gtm.steamproxy.vip/app/99400/discussions/0/483368526569234886/



With this bug you'll be unable to proceed further in the game as you can't jump on the platform.

Here's how it should look like:

After going through the usual emergency procedure to validate the game cache and going so far as to start a new game and play again until I reached this point the bug persisted.
Trying to reinstall all files from the redist subfolder of the game except flash player was also useless.

I uninstalled the game and replaced the legacy PhysX driver with this one from the Nvidia site
http://www.nvidia.com/object/physx-9.12.1031-legacy-driver.html.

Then I re-installed Garshasp and made sure the game was launching. I exited the game and deleted my player profile and the default Garshasp profile to get rid of the corrupted savegames.

After starting a new game and playing until the bug would occur I was rewarded with this



and could reach the other side of the level



Of course, nobody should have to jump through all those hoops to get the game working as it should but at least you can play the game. The bug occurring rather early in the game is the only positive aspect.