diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c4298d..a8535d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,9 @@
 # CHANGELOG
+## \[v0.0.1.1] improve performance by using PolyCollection (2022/07/19)
+- WFC
+  - improve process speed of `make_geo_plot()` by using PolyCollection
+- README
+  - add Japanese version of README
 ## \[v0.0.1] init (2022/06/26)
 - WFC
   - plot WFC hitbox (x-z plot and x/z-y plot) with matplotlib toolbar
diff --git a/setup.cfg b/setup.cfg
index 6053f16..7fcdec7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = supSMSTAS
-version = 0.0.1
+version = 0.0.1.1
 author = sup39
 author_email = sms@sup39.dev
 description = A tool to support Super Mario Sunshine Tool Assisted Speedrun/Superplay
@@ -23,9 +23,9 @@ packages = find_namespace:
 include_package_data = True
 python_requires = >=3.8
 install_requires =
-  sup-dolphin-memory-lib ~= 0.1.0
-  matplotlib ~= 3.5
-  PyQt5 ~= 5.15
+  sup-dolphin-memory-lib >= 0.1.1
+  matplotlib >= 3.5
+  PyQt5 >= 5.15
 
 [options.packages.find]
 where = src
diff --git a/src/supSMSTAS/UI.py b/src/supSMSTAS/UI.py
index 054aff5..8aa3115 100644
--- a/src/supSMSTAS/UI.py
+++ b/src/supSMSTAS/UI.py
@@ -108,7 +108,7 @@ class WFCWidget(QWidget):
     self.showMario = Qt.Checked
     self.airborne = Qt.Checked
     self.yoshi = 0
-    self.fps = 4
+    self.fps = 8
     self.updating = False
     self.invertX = 0
     self.invertZ = 0
@@ -222,9 +222,9 @@ class WFCWidget(QWidget):
     pos = array(pos)
     x, y, z = pos
     # get collision data (static collision)
-    colInfo = d.read_struct(('gpMap', 0x10, 0), '>ffI4x4xI')
+    colInfo = d.read_struct(('gpMap', 0x10, 0), '>ffI4x4xII')
     if colInfo is None: return
-    xLimit, zLimit, xBlockCount, ptrStCLR = colInfo
+    xLimit, zLimit, xBlockCount, ptrStCLR, ptrDyCLR = colInfo
     ## TBGCheckListRoot[zBlockCount][xBlockCount]
     colOff = int((z+zLimit)//1024*xBlockCount + (x+xLimit)//1024)*36
     ## root->ground(12*2).next(4)
@@ -236,12 +236,14 @@ class WFCWidget(QWidget):
 
     t0 = time.time()
     stGnds, stRoofs, stWalls = [
-    #data1 = [ # TODO dynamic data
-      d.checkList2list(d.read_uint32(ptrStCLR+colOff+4+12*j))
+      [
+        tri
+        for ptrCLR in [ptrStCLR, ptrDyCLR]
+        for tri in d.checkList2list(d.read_uint32(ptrCLR+colOff+4+12*j))
+      ]
       for j in range(3)
     ]
     hitboxs = [
-      # ceiling
       ([
         #(c, array((0, -1, 0)))
         (makeRoof(tri, 82 if airborne else 2), array([0, -1, 0]))
@@ -285,6 +287,7 @@ class WFCWidget(QWidget):
       (pnXZ, axesXZ),
     ]):
       ax.patches.clear()
+      ax.collections.clear()
       make_geo_plot(ax, hitboxs, pos, pn, axes)
       if self.showMario:
         ax.add_patch(patches.Circle(pos[axes], 25, fc='red'))
diff --git a/src/supSMSTAS/WFC.py b/src/supSMSTAS/WFC.py
index 0ab5187..16f900b 100644
--- a/src/supSMSTAS/WFC.py
+++ b/src/supSMSTAS/WFC.py
@@ -4,7 +4,7 @@
 import numpy as np
 from numpy import array
 from .shape import Polyhedron
-import matplotlib.patches as patches
+from matplotlib.collections import PolyCollection
 
 class Surface:
   def __init__(self, surtype, surpara, trntype, unk7, verts, vidxs=None, n=None, c=None):
@@ -81,17 +81,28 @@ def makeWall(tri, rW=50, dy=30):
 
 def make_geo_plot(ax, hitboxs, p0, pn, axes):
   # paras
-  arrowWidthBase = 60
-  arrowWidthMul = 0.2
-  arrowLenMax = 80
+  arrowWidthBase = 70
+  arrowWidthMul = 0.5
+  arrowLenMax = 200 #80
   arrowLenTher = 200
   arrowLenMul1 = 0.7
   arrowLenMul2 = 0.35
   arrowHeadLenMul = 0.3
-  arrowLenMul2off = 0.025
-  arrowCountMax = 20
+  arrowLenMul2off = 0.1 #0.025
+  arrowCountMax = 100
+  aw, ah = 0.2, 0.6 # width, height of bottom rect
+  arrowVerts = array([
+    [0.0,  aw],
+    [ ah,  aw],
+    [ ah, 0.5],
+    [1.0, 0.0],
+    [ ah, -.5],
+    [ ah, -aw],
+    [0.0, -aw],
+  ])
 
   # plot
+  patches = []
   for polys, awmul, alen, facecolor, arcolor in hitboxs:
     # draw wall hitboxs (draw in reverse order)
     for poly, n in polys[::-1]:
@@ -99,7 +110,7 @@ def make_geo_plot(ax, hitboxs, p0, pn, axes):
       verts = poly.slicePlane(p0, pn)[:,axes]
       if len(verts) == 0: continue
       # plot hitbox area
-      ax.add_patch(patches.Polygon(verts, fc=facecolor, ec='black', lw=1))
+      patches.append((verts, facecolor, 'black')) # (verts, fc, ec)
       # plot arrow
       n = n*(1, 0, 1) # no y arrow
       n = n[axes]
@@ -147,27 +158,34 @@ def make_geo_plot(ax, hitboxs, p0, pn, axes):
       ncts = nbss.mean(axis=0)
       nrgs = np.abs(np.diff(nbss, axis=0)[0])
       # add arrow
+      maty = array([-n[1], n[0]])*arrowWidth
       for p, nrg in zip(
         C+np.matmul(np.column_stack([ncts, ls]), B),
         nrgs,
       ):
         if nrg > arrowLenTher:
           nrg = min(arrowLenMax, nrg*arrowLenMul2)
-          dn = n * nrg
           offs = [-arrowLenMul2off, 1+arrowLenMul2off]
         else:
           nrg = min(arrowLenMax, nrg*arrowLenMul1)
-          dn = n * nrg
           offs = [0.5]
-        arrowHeadLen = nrg*arrowHeadLenMul
+        dn = n * nrg
+        # add patches
+        verts0 = np.matmul(arrowVerts, [n*nrg, maty])
         for off in offs:
-          ax.arrow(
-            *(p-dn*off), *dn,
-            width=arrowWidth, #min(arrowWidth, nrg*0.15),
-            head_length=arrowHeadLen,
-            length_includes_head=True,
-            color=arcolor,
-          )
+          patches.append((
+            p-dn*off+verts0,
+            arcolor, # fc
+            arcolor, # ec
+          ))
+
+  if len(patches):
+    ax.add_collection(PolyCollection(
+      **{
+        k: v
+        for k, v in zip(('verts', 'facecolors', 'edgecolors'), zip(*patches))
+      },
+    ))
 
   ax.set_xlabel('xyz'[axes[0]])
   ax.set_ylabel('xyz'[axes[1]])