no, in general horizontal drawings work fine in Tahoe.
However there are some undocumented optimizations you can activate by naming the drawing.
If you name your drawing "left" (or any of these: "l", "left", "Left", "go left", "←", "line left", "west") it will be optimized for a horizontal line to the left.
Same goes for right:
"r", "right", "Right", "arrow right", "go right", "line right", "east"
Up:
"u", "up", "Go Up", "Up", "up line", "north"
Down:
"d", "down", "go down", "Down", "down line", "south"
Down-Left:
"dl", "left down", "Down-Left", "down left", "down-left", "Arrow Down-Left", "south-west line", "south-west"
Up-Left:
"ul", "left up", "Up-Left", "up left", "up-left", "↖", "north-west line", "north-west"
Down-Right:
"dr", "right down", "Down-Right", "down right", "down-right", "south-east line", "south-east"
Up-Right:
"ur", "right up", "Up-Right", "up right", "up-right", "Arrow Up-Right", "north-east line", "north-east"