Whenever I select my GPU (RTX3080) in the renderer options, Affnity behaves very laggy and slow when navigating the toolbar on the left and even outside of the Affinity window. Working on an image itself is fine, but once I leave the 'image' area it starts behaving very laggy. I'm running a 3440x1440 monitor with 120hz. When I disable the renderer and choose the standard option, everything works fine (but slower because of no gpu rendering).
Edit : found out that disabling Gsync fixes this.