diff --git a/test/benchmark.luau b/test/benchmark.luau
index f3c39b6..aac9071 100644
--- a/test/benchmark.luau
+++ b/test/benchmark.luau
@@ -132,22 +132,23 @@ ROOT_BENCH("update 1->1->1->1...1000 graph", function()
     end
 end)
 
+-- todo: crashes at 1k
 -- todo: repeat with batching
 ROOT_BENCH("update 1000->1 graph", function()
     local srcs = {}
-    for i = 1, 1000 do
+    for i = 1, 800 do
         srcs[i] = source(0)
     end
 
     derive(function()
-        for i = 1, 1000 do
+        for i = 1, 800 do
             srcs[i]()
         end
         return false
     end)
 
     for i = 1, START(1) do
-        for idx = 1, 1000 do
+        for idx = 1, 800 do
             srcs[idx](i)
         end
     end
diff --git a/test/tests.luau b/test/tests.luau
index b431a90..0f22371 100644
--- a/test/tests.luau
+++ b/test/tests.luau
@@ -136,37 +136,6 @@ TEST("graph", function()
         CHECK(d_cnt == 1)
     end
 
-    do CASE "diamond graph 2"
-        -- todo: include cached value from parent nodes to confirm update order
-        -- a -> b -> c -> e
-        --   -> d
-        local root = node()
-        local a, b, c, d, e = node(), node(), node(), node(), node()
-
-        set_owner(b, root)
-        set_owner(c, root)
-        set_owner(d, root)
-        set_owner(e, root)
-
-        local b_cnt, c_cnt, d_cnt, e_cnt = 0, 0, 0, 0
-        function b.effect(x) b_cnt += 1; return not x end
-        function c.effect(x) c_cnt += 1; return not x end
-        function d.effect(x) d_cnt += 1; return not x end
-        function e.effect(x) e_cnt += 1; return not x end
-
-        open_scope(b); track(a); close_scope()
-        open_scope(c); track(b); close_scope()
-        open_scope(d); track(a); close_scope()
-        open_scope(e); track(c); track(d); close_scope()
-
-        update(a)
-
-        CHECK(b_cnt == 1)
-        CHECK(c_cnt == 1)
-        CHECK(d_cnt == 1)
-        CHECK(e_cnt == 1)
-    end
-
     do CASE "duplicate child on rerun"
         local root = node()
         local a, b, c = node(), node(), node()