2.2 made a lot of tweaks to graphics settings. Try switching down to a lower default setting (Ultra down to High, High down to Medium, etc.) and see if that affects your stuttering and load times. If it does help, you can go through the advanced graphics options and turn individual things like shadows or terrain quality up until you find the one that's giving you trouble or you find a happy medium between graphics quality and performance.
It's not a perfect solution but it might help you get by until the issue can be patched.
It's not a perfect solution but it might help you get by until the issue can be patched.