diff --git a/tests/environments/fancythm/dump.txt b/tests/environments/fancythm/dump.txt
new file mode 100644
index 0000000..e69de29
diff --git a/tests/environments/fancythm/test.tex b/tests/environments/fancythm/test.tex
index f1cadc7..b27db55 100644
--- a/tests/environments/fancythm/test.tex
+++ b/tests/environments/fancythm/test.tex
@@ -7,65 +7,41 @@
 \usepackage[generate defaults = false]{fancythm}
 
 \ExplSyntaxOn
-        \fancythm_provide_big_theorem:nn { style = thmredmarginandfill } { theorem }
-        \fancythm_provide_big_theorem:nn { style = thmredmarginandfill } { proposition }
-        \fancythm_provide_big_theorem:nn { style = thmredmarginandfill } { corollary }
-        \fancythm_provide_big_theorem:nn { style = thmbluemarginandfill } { definition }
-        \fancythm_provide_big_theorem:nn { style = thmorangemarginandfill} { lemma   }
-        \fancythm_provide_big_theorem:nn { style = thmgreenmargin }        { example }
-        \fancythm_provide_big_theorem:nn
-          {
-            style = thmredmarginbluefill,
-            name = Theorem ~ and ~  Definition
-          } { theoremdef }
-        \fancythm_provide_big_theorem:nn
-          {
-            style = thmredmarginbluefill,
-            name = Proposition ~ and ~ Definition
-          } { propositiondef }
-        \fancythm_provide_big_theorem:nn
-          {
-            style = thmorangemarginbluefill,
-            name = Lemma ~ and ~ Definition
-          } { propositiondef }
-        \fancythm_provide_small_theorem:nn { style = thmvioletmargin } { notation }
-        \fancythm_provide_small_theorem:nn { style = thmyellowmargin } { remark }
-        \fancythm_provide_small_theorem:nn { style = thmgoldmargin } { praise }
-        \fancythm_provide_small_theorem:nn { style = thmblackmarginandfill } { question }
-        \fancythm_provide_small_theorem:nn { style = thmblackmargin } { orga }
-        \fancythm_provide_small_theorem:nn { style = thmredmargin } { fact }
-        \fancythm_provide_small_theorem:nn
-          {
-            style = thmyellowmargin,
-            name = Trivial ~ Nonsense
-          } { trivial }
-        \fancythm_provide_small_theorem:nn
-          {
-            style = thmvioletmargin,
-            name = Abuse ~ of ~ Notation
-          } { abuse }
-        \fancythm_provide_small_theorem:nn
-          {
-            style = thmyellowmargin,
-            name = Oral ~ remark
-          } { oral }
-%    \end{macrocode}
-%    \begin{macrocode}
-          \fancythm_provide_tiny_theorem:nn { } { variant }
-          \fancythm_provide_tiny_theorem:nn { } { assumption }
-          \fancythm_provide_tiny_theorem:nn { } { note }
-          \fancythm_provide_tiny_theorem:nn { } { warning }
-          \fancythm_provide_tiny_theorem:nn { } { goal }
-          \fancythm_provide_tiny_theorem:nn { } { strategy }
-          \fancythm_provide_tiny_theorem:nn { } { problem }
-          \fancythm_provide_tiny_theorem:nn { } { info }
-          \fancythm_provide_tiny_theorem:nn { } { observe }
-          \fancythm_provide_tiny_theorem:nn { } { property }
-          \fancythm_provide_tiny_theorem:nn { } { intuition }
-          \fancythm_provide_tiny_theorem:nn { } { recall }
-          \fancythm_provide_tiny_theorem:nn { } { idea }
-          \fancythm_provide_tiny_theorem:nn { } { exercise }
-          \fancythm_provide_tiny_theorem:nn { } { reminder }
+\benchmark_once:n {
+  \fancythm_provide_theorem:nVVV {theorem}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {proposition}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {corollary}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {definition}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {lemma}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {example}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {theoremdef}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {propositiondef}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {propositiondef}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {notation}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {remark}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {praise}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {question}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {orga}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {fact}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {trivial}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {abuse}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {oral}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {variant}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {assumption}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {note}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {warning}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {goal}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {strategy}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {problem}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {info}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {observe}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {property}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {intuition}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {recall}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {idea}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {exercise}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+  \fancythm_provide_theorem:nVVV {reminder}\l__fancythm_group_clist \l__fancythm_name_tl \l__fancythm_thmtools_clist 
+}
 \ExplSyntaxOff
 
 \begin{document}
diff --git a/tests/environments/fancythm/test2.tex b/tests/environments/fancythm/test2.tex
index 2f59923..bbe5a1b 100644
--- a/tests/environments/fancythm/test2.tex
+++ b/tests/environments/fancythm/test2.tex
@@ -1,10 +1,14 @@
-\documentclass{article}
-
-\usepackage[generate defaults = false]{fancythm}
+\documentclass{minimal}
 
 \usepackage{l3benchmark}
 
+\usepackage[generate defaults = false]{fancythm}
+
 \ExplSyntaxOn
+
+\iow_new:N \l_my_iow
+\iow_open:Nn \l_my_iow { dump.txt }
+
  \tl_put_right:Nn \l_tmpa_tl
  {
    \csname __groupthm_thmtools_declare_theorem:nn\endcsname {name=Definition}{__definition__groups_}
@@ -181,7 +185,7 @@
    \csname __groupthm_thmtools_declare_theorem:nn\endcsname {sibling=sublevel,numbered=no,name=\csname __fancythm_translate:n\endcsname {Reminder}*$^{\dagger }$}{__reminder__groups_tiny_dagger_star}
    \csname __groupthm_define_family_options:nnnn\endcsname {reminder}{!s!t+}{\IfBooleanT {#1}{\AddTheoremToGroup {star}}\IfBooleanT {#2}{\AddTheoremToGroup {dagger}}}{tiny}
 }
- \tl_show:N \l_tmpa_tl
+% \exp_args:NNV \iow_now:Nn \l_my_iow \l_tmpa_tl
  \benchmark_once:n
    {
      \tl_use:N \l_tmpa_tl