Hello IndecisiveUsernameChooser. Hope all is well IndecisiveUsernameChooser. If I had to guess, that’s all about having a powerful computer? I used to have to do stuff like that before I upgraded my computer and beefed it up. Also there were Blender versions were texture painting was slow and after a few updates to Blender, that mode got fast. So perhaps you are using an older Blender? Another thing could be you could’ve accidentally applied a subdivision modifier and added another one on top and now your mesh is extremely dense in polygons.
