I noticed that in Photoshop CC 2018 'Catch-up on Brush end' is not accurate. It just doesn't catch-up with the cursor all the way.
I already did reset my tools first , set Spacing to 1%, set my brush Hardness to 0%. Does anybody else have the same experience?
Below a simulation of the issue.
It wasn't working for either, except it suddenly was! I was testing comparing Photoshop Smoothing with Lazy Nezumi Pro, and with tablet and mouse and with different settings and cursors. I ended up with cursor size set to full, which is my normal but Photoshop had earlier crashed and reset my Preferences!
This is using the mouse with left button still pressed
And this after releasing it.
Not perfect, but OK.
Incidentally, Lazy Nezumi Pro's catch up feature does work perfectly.