Big lag using paint brush on simple canvas
Using a blank, default new canvas, my PS is now very slow. Painting with a small brush shows a lot of lag as the screen redraws.
I've turned off using the GPU and some settings in product preview with no effect.
Looking at windows task manager performance charts show minimal cpu/gpu/ram or drive usage.
My nvidia 1070 with 8gb uses the latest studio driver.
I feel sure there is a setting or something I've got wrong. My specs are below.
