My brush tool suddenly became very slow : r/photoshop
Kyle T Webster on Twitter: "Please RT - tips to REDUCE BRUSH LAG in # Photoshop: 1. Increase PS's Memory Usage 2. Set Drawing Mode to 'Basic' 3. Use external drive for Scratch
How to fix Brush Lag in Photoshop CC – JAY VERSLUIS
BAD BRUSH — Beating Brush Lag in Manga Studio
Solved: PS CC 2018 Brush Lag/Brush Delay? - Adobe Support Community - 9815248