tell me first if you are authentic?

1. The video card driver is not installed
2.ps does not use gpu, graphics card settings can be changed

in this case, you can try to change the cache disk in your preferences. Generally speaking, there is no problem after the change.

also come to work part-time (programmers fix everything part-time)

The configuration of the operating system is not mentioned in the
1. question. Whether it is 64bits or Win10 rather than Win7 also has something to do with the performance. For example, generally speaking, the driver support of Win10 is better than that of Win7.
2. typing stutter is suspicious of the input method first. Usually, stutter is stuck on the network load when "cloud input" or "cloud font library" is turned on (no matter how high your configuration is, the network is not good, it is still stuck here. Barrel theory).
There are two settings in the
3. Photoshop, one for the graphics card and the other for the cache.
4. "computer shop master" has checked and explained that the driver should be installed, but I don't know if it is a stable version, and it is generally not recommended to install a very new one.

one: memory usage

Photoshop is a 64-bit native application, so it will consume as much memory as you give it. When carrying large images, more memory is more advantageous. By default, Photoshop allocates 70% of the memory for its use. You can change this value through the "performance" of "preferences" in "Edit". After changing the value, restart the computer to improve the performance of Photoshop.
II: cache and history

you can find history and cache under "performance" under "preferences" in the menu "Edit", and select "larger picture" and "default" modes as needed.