diff --git a/frontend/dev/bench.cljs b/frontend/dev/bench.cljs
index bc1b6cdf8..dc1fbb018 100644
--- a/frontend/dev/bench.cljs
+++ b/frontend/dev/bench.cljs
@@ -3,63 +3,95 @@
    [app.common.data :as d]
    [app.common.data.macros :as dm]
    [app.common.geom.point :as gpt]
-   [app.common.geom.point :as gpt]
-   [app.common.geom.shapes.rect :as gsr]
-   [app.common.perf :as perf]
+   [app.common.geom.matrix :as gmt]
+   [app.common.geom.shapes.transforms :as gst]
+   [app.common.record :as cr]
+   [app.common.geom.rect :as grc]
+   [app.common.geom.rect_impl :as grci]
    [app.common.types.modifiers :as ctm]
-   [clojure.spec.alpha :as s]
-   [clojure.test.check.generators :as gen]))
+   [app.common.types.shape :as cts]
+   [app.util.perf :as perf]))
 
-(def points
-  (gen/sample (s/gen ::gpt/point) 20))
-
-(defn bench-points
+(defn random
   []
-  #_(perf/benchmark
-     :f #(gpt/center-points-old points)
-     :samples 20
-     :max-iterations 500000
-     :name "base")
-  (perf/benchmark
-   :f #(gpt/center-points points)
-   :max-iterations 500000
-   :samples 20
-   :name "optimized"))
+  (js/Math.random))
 
-(def modifiers
-  (-> (ctm/empty)
-      (ctm/move (gpt/point 100 200))
-      (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5))
-      (ctm/move (gpt/point -100 -200))
-      (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5))
-      (ctm/rotation (gpt/point 0 0) -100)
-      (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5))))
-
-(defn bench-modifiers
+(defn force-gc
   []
-  (perf/benchmark
-   :f #(ctm/modifiers->transform modifiers)
-   :max-iterations 50000
-   :samples 20
-   :name "current")
+  (js/gc))
 
-  #_(perf/benchmark
-   :f #(ctm/modifiers->transform-2 modifiers)
-   :max-iterations 50000
-   :samples 20
-   :name "optimized"))
+;; (defn bench-modifiers
+;;   []
+;;   (println "")
+;;   (println "===> BENCH MODIFIERS <===")
+;;   (let [modifiers (-> (ctm/empty)
+;;                       (ctm/move (gpt/point 100 200))
+;;                       (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5))
+;;                       (ctm/move (gpt/point -100 -200))
+;;                       (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5))
+;;                       (ctm/rotation (gpt/point 0 0) -100)
+;;                       (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5)))]
+;;     (perf/benchmark
+;;      :gc force-gc
+;;      :iterations 50000
+;;      :name "modifiers->transform:old"
+;;      :run-fn #(ctm/modifiers->transform-old modifiers))
+
+;;     (perf/benchmark
+;;      :gc force-gc
+;;      :iterations 50000
+;;      :name "modifiers->transform:new"
+;;      :run-fn #(ctm/modifiers->transform modifiers))))
+
+
+;; (defn bench-apply-transform
+;;   []
+;;   (println "")
+;;   (println "===> BENCH APPLY TRANFORM <===")
+;;   (let [modifiers (-> (ctm/empty)
+;;                       (ctm/move (gpt/point 100 200))
+;;                       (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5))
+;;                       (ctm/move (gpt/point -100 -200))
+;;                       (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5))
+;;                       (ctm/rotation (gpt/point 0 0) -100)
+;;                       (ctm/resize (gpt/point 100 200) (gpt/point 2.0 0.5)))
+;;         transform (ctm/modifiers->transform modifiers)
+
+;;         shape     (cts/setup-shape {:type :rect
+;;                                     :x 0
+;;                                     :y 0
+;;                                     :width 10
+;;                                     :height 10})]
+
+;;     ;; (app.common.pprint/pprint shape)
+
+;;     (perf/benchmark
+;;      :gc force-gc
+;;      :iterations 400
+;;      :name "apply-transform:old"
+;;      :run-fn #(gst/apply-transform shape modifiers))
+
+;;     (perf/benchmark
+;;      :gc force-gc
+;;      :iterations 400
+;;      :name "apply-transform:new"
+;;      :run-fn #(gst/apply-transform' shape modifiers))
+;;     ))
 
-;; (ctm/modifiers->transform-2 modifiers)
 
 (defn ^:dev/after-load after-load
   []
-  #_(bench-modifiers))
+  ;; (bench-apply-transform)
+  ;; (let [o (grc/make-rect 1 1 10 10)]
+  ;;   (prn o)
+  ;;   (prn (-> o
+  ;;            (cr/assoc! :x 40)
+  ;;            (grc/update-rect! :size)))
+  ;;   )
+  )
 
 (defn main
-  [& [name]]
-  (case name
-    "points" (bench-points)
-    "modifiers" (bench-modifiers)
-    (println "available: points"))
-  #_(.exit js/process 0))
-
+  [& params]
+  ;; (bench-apply-transform)
+  ;; (bench-apply-transform)
+  nil)
diff --git a/frontend/src/app/util/perf.cljs b/frontend/src/app/util/perf.cljs
index f962e993e..d1c6b81ae 100644
--- a/frontend/src/app/util/perf.cljs
+++ b/frontend/src/app/util/perf.cljs
@@ -107,26 +107,40 @@
       children)))
 
 (defn benchmark
-  [& {:keys [f warmup iterations name]
+  [& {:keys [run-fn chk-fn iterations name gc]
       :or {iterations 10000}}]
-  (let [end-mark (str name ":end")]
+  (let [end-mark  (str name ":end")
+        blackhole (volatile! nil)]
     (println "=> benchmarking:" name)
-    (println "--> warming up:" iterations)
-    (loop [i iterations]
+    (when gc
+      (println "-> force gc: true"))
+
+    (println "--> warming up:  " (* iterations 2))
+    (when (fn? gc) (gc))
+    (loop [i (* iterations 2)]
       (when (pos? i)
-        (f)
+        (vreset! blackhole (run-fn))
         (recur (dec i))))
     (println "--> benchmarking:" iterations)
+    (when (fn? gc) (gc))
     (js/performance.mark name)
     (loop [i iterations]
       (when (pos? i)
-        (f)
+        (vreset! blackhole (run-fn))
         (recur (dec i))))
     (js/performance.measure end-mark name)
+
+    (when (fn? chk-fn)
+      (when-not (chk-fn @blackhole)
+        (println "--> EE: failed chk-fn")))
+
+
     (let [[result] (js/performance.getEntriesByName end-mark)
           duration (mth/precision (.-duration ^js result) 4)
           avg      (mth/precision (/ duration iterations) 4)]
-      (println "--> TOTAL:" (str duration "ms") "AVG:" (str avg "ms"))
+      (println "--> TOTAL:" (str duration " ms"))
+      (println "--> AVG  :" (str avg " ms"))
+      (println "")
       (js/performance.clearMarks name)
       (js/performance.clearMeasures end-mark)
       #js {:duration duration