I added smoothness tags to the main roads around the lake, and updated them to minor/unclassified instead of residential in Changeset: 182406688. The standard smoothness tag is bad for dirt or gravel roads, but I used very_bad past Note 4531676 which was next to this one. until the end of the road. Feel free to update any smoothness tags as needed. See https://wiki.openstreetmap.org/wiki/Key:smoothness for details on the smoothness tags.