Hi,
One of the reasons why I decided to try Affinity designer is the ability to work with vector and persona mode, this helps me to produce my work faster.
I like to sketch with pencils that feels like im drawing in the paper like photoshop does, no delay and no need for me to put to much pressure on my pencil, since is a sketch i like to drawing fast until I get what I wanted, but in Affinity designer, it does feel the same, I tried to change the force pressure control size, it didn't seem to work that well for me, not nature somehow and when im trying to draw a line without so much pressure it just doesn't show a line as I expected, it looks too light and soft. in photoshop I can draw a line easily without putting to much effort on my hand. this is the reason why im giving a change now to Affinity designer, and if I get the problem fix I will definitely consider to purchase for myself. I know it takes time to get use, but some basic functions at least I would like to feel the same as in photoshop.