I have tested little bit more with 5000 x 5000 and I see Rectangle Select is not the only problem. It looks to me that really instant working are Pencil, Erraser and Paintbrush. All shapes like Rectangle, Rounded Recntangle, Line etc have big delay and huge CPU consumption.
I have tested little bit more with 5000 x 5000 and I see Rectangle Select is not the only problem. It looks to me that really instant working are Pencil, Erraser and Paintbrush. All shapes like Rectangle, Rounded Recntangle, Line etc have big delay and huge CPU consumption.