I have an issu when painting in quick mask with 200% zoom view and above. From time to time the image freezes, and can't be moved. I can continue editting the picture/mask but it's not showing. I have the same issue on both my imac and macbook pro, both running the latest firmware os and photoshop.
Another bug I'm experiencing is with keyboard shortcuts: when trying to change the tool with a shotcut, it changes for a second and then "bouncing back" to the previous tool used.
please post the contents of Photoshop's Help>System Info... menu, so that we get to know your OS, its version, the exact version of Photoshop you are running, the date of the GPU driver, etc. If your post disappears, do not repost it, as it might need to be approved by a moderator. As an alternative you can save it to a .txt file on your computer and attach it on your answer via the forum. (attachments do not post from e-mail)
Hi, from this system info, I can see that your disk is amost full, there is only 1% free! 9 GB out of 900...
Check and remove duplicate files, old software, backup files on (duplicate) external drives, etc.
When you use Photoshop, you'll need lots of room for its scratch file, especially if you edit large files, or have lots of layers, or lots of edits... the scratch disk acts as the main memory, RAM is just a cache. Please free some room, and report if things get better.