diff --git a/piker/ui/_curve.py b/piker/ui/_curve.py
index 11901987..65e60428 100644
--- a/piker/ui/_curve.py
+++ b/piker/ui/_curve.py
@@ -84,8 +84,6 @@ class FastAppendCurve(pg.GraphicsObject):
         # brutaaalll, see comments within..
         self.yData = None
         self.xData = None
-        # self._vr: Optional[tuple] = None
-        # self._avr: Optional[tuple] = None
         self._last_cap: int = 0
 
         self._name = name
@@ -98,14 +96,6 @@ class FastAppendCurve(pg.GraphicsObject):
         # we're basically only using the pen setting now...
         super().__init__(*args, **kwargs)
 
-        # self._xrange: tuple[int, int] = self.dataBounds(ax=0)
-        # self._xrange: Optional[tuple[int, int]] = None
-        # self._x_iv_range = None
-
-        # self._last_draw = time.time()
-        # self._in_ds: bool = False
-        # self._last_uppx: float = 0
-
         # all history of curve is drawn in single px thickness
         pen = pg.mkPen(hcolor(color))
         pen.setStyle(_line_styles[style])
@@ -162,9 +152,6 @@ class FastAppendCurve(pg.GraphicsObject):
         vr = self.viewRect()
         l, r = int(vr.left()), int(vr.right())
 
-        # if not self._xrange:
-        #     return 0
-
         start, stop = self._xrange
         lbar = max(l, start)
         rbar = min(r, stop)
diff --git a/piker/ui/_flows.py b/piker/ui/_flows.py
index 8610bb68..2086a3ec 100644
--- a/piker/ui/_flows.py
+++ b/piker/ui/_flows.py
@@ -358,20 +358,10 @@ class Flow(msgspec.Struct):  # , frozen=True):
     is_ohlc: bool = False
     render: bool = True  # toggle for display loop
 
-    # pre-graphics formatted data
-    gy: Optional[np.ndarray] = None
-    gx: Optional[np.ndarray] = None
-
-    # pre-graphics update indices
-    _iflat_last: int = 0
-    _iflat_first: int = 0
-
     # downsampling state
     _last_uppx: float = 0
     _in_ds: bool = False
 
-    _graphics_tranform_fn: Optional[Callable[ShmArray, np.ndarray]] = None
-
     # map from uppx -> (downsampled data, incremental graphics)
     _src_r: Optional[Renderer] = None
     _render_table: dict[
@@ -717,6 +707,8 @@ class Flow(msgspec.Struct):  # , frozen=True):
 
             else:
                 w = 0.5
+                # lol, commenting this makes step curves
+                # all "black" for me :eyeroll:..
                 graphics._last_line = QLineF(
                     x_last - w, 0,
                     x_last + w, 0,
diff --git a/piker/ui/_ohlc.py b/piker/ui/_ohlc.py
index f10a4998..e5542609 100644
--- a/piker/ui/_ohlc.py
+++ b/piker/ui/_ohlc.py
@@ -129,11 +129,7 @@ class BarItems(pg.GraphicsObject):
         self.fast_path = QtGui.QPainterPath()
 
         self._xrange: tuple[int, int]
-        # self._yrange: tuple[float, float]
         self._vrange = None
-
-        # TODO: don't render the full backing array each time
-        # self._path_data = None
         self._last_bar_lines: Optional[tuple[QLineF, ...]] = None
 
         # track the current length of drawable lines within the larger array
@@ -212,16 +208,6 @@ class BarItems(pg.GraphicsObject):
             hb.bottomRight(),
         )
 
-        # fp = self.fast_path
-        # if fp:
-        #     fhb = fp.controlPointRect()
-        #     print((hb_tl, hb_br))
-        #     print(fhb)
-        #     hb_tl, hb_br = (
-        #         fhb.topLeft() + hb.topLeft(),
-        #         fhb.bottomRight() + hb.bottomRight(),
-        #     )
-
         # need to include last bar height or BR will be off
         mx_y = hb_br.y()
         mn_y = hb_tl.y()
@@ -281,7 +267,3 @@ class BarItems(pg.GraphicsObject):
         p.setPen(self.bars_pen)
         p.drawPath(self.path)
         profiler(f'draw history path: {self.path.capacity()}')
-
-        # if self.fast_path:
-        #     p.drawPath(self.fast_path)
-        #     profiler('draw fast path')