diff --git a/matrix/fed.cc b/matrix/fed.cc
index 1e55b7270..d45b7aa27 100644
--- a/matrix/fed.cc
+++ b/matrix/fed.cc
@@ -1416,11 +1416,12 @@ ircd::m::fed::fetch_head(const id::room &room_id,
 {
 	const unique_buffer<mutable_buffer> buf
 	{
-		16_KiB
+		32_KiB
 	};
 
 	make_join::opts opts;
 	opts.remote = remote;
+	opts.dynamic = false;
 	make_join request
 	{
 		room_id, user_id, buf, std::move(opts)
diff --git a/matrix/feds.cc b/matrix/feds.cc
index b68c251a4..f67922371 100644
--- a/matrix/feds.cc
+++ b/matrix/feds.cc
@@ -225,7 +225,6 @@ ircd::m::feds::backfill(const opts &opts,
 	(auto &request, const auto &origin)
 	{
 		m::fed::backfill::opts v1opts;
-		v1opts.dynamic = true;
 		v1opts.event_id = opts.event_id;
 		v1opts.limit = opts.argi[0];
 		v1opts.remote = string_view
@@ -250,7 +249,6 @@ ircd::m::feds::state(const opts &opts,
 	(auto &request, const auto &origin)
 	{
 		m::fed::state::opts v1opts;
-		v1opts.dynamic = true;
 		v1opts.ids_only = opts.arg[0] == "ids";
 		v1opts.event_id = opts.event_id;
 		v1opts.remote = string_view
@@ -275,7 +273,6 @@ ircd::m::feds::event(const opts &opts,
 	(auto &request, const auto &origin)
 	{
 		m::fed::event::opts v1opts;
-		v1opts.dynamic = true;
 		v1opts.remote = string_view
 		{
 			strlcpy{request.origin, origin}
@@ -298,7 +295,6 @@ ircd::m::feds::auth(const opts &opts,
 	(auto &request, const auto &origin)
 	{
 		m::fed::event_auth::opts v1opts;
-		v1opts.dynamic = true;
 		v1opts.remote = string_view
 		{
 			strlcpy{request.origin, origin}
diff --git a/matrix/fetch.cc b/matrix/fetch.cc
index 11400fdb7..74cc9f9ed 100644
--- a/matrix/fetch.cc
+++ b/matrix/fetch.cc
@@ -463,7 +463,6 @@ try
 		{
 			fed::event_auth::opts opts;
 			opts.remote = remote;
-			opts.dynamic = true;
 			request.future = std::make_unique<fed::event_auth>
 			(
 				request.opts.room_id,
@@ -479,7 +478,6 @@ try
 		{
 			fed::event::opts opts;
 			opts.remote = remote;
-			opts.dynamic = true;
 			request.future = std::make_unique<fed::event>
 			(
 				request.opts.event_id,
@@ -494,7 +492,6 @@ try
 		{
 			fed::backfill::opts opts;
 			opts.remote = remote;
-			opts.dynamic = true;
 			opts.limit = request.opts.backfill_limit;
 			opts.limit = opts.limit?: size_t(backfill_limit_default);
 			opts.event_id = request.opts.event_id;
diff --git a/matrix/keys.cc b/matrix/keys.cc
index efb59eeee..bc716193e 100644
--- a/matrix/keys.cc
+++ b/matrix/keys.cc
@@ -220,10 +220,10 @@ try
 
 	m::fed::key::opts opts;
 	opts.remote = query_server;
-	opts.dynamic = true;
+	opts.dynamic = false;
 	const unique_buffer<mutable_buffer> buf
 	{
-		16_KiB
+		32_KiB
 	};
 
 	m::fed::key::query request
@@ -332,7 +332,7 @@ try
 	opts.dynamic = false;
 	const unique_buffer<mutable_buffer> buf
 	{
-		16_KiB
+		32_KiB
 	};
 
 	m::fed::key::keys request
diff --git a/matrix/room_aliases.cc b/matrix/room_aliases.cc
index aad6325b2..4db629881 100644
--- a/matrix/room_aliases.cc
+++ b/matrix/room_aliases.cc
@@ -368,7 +368,7 @@ try
 
 	m::fed::query::opts opts;
 	opts.remote = remote;
-	opts.dynamic = true;
+	opts.dynamic = false;
 
 	m::fed::query::directory request
 	{
diff --git a/matrix/room_bootstrap.cc b/matrix/room_bootstrap.cc
index 236e268b7..6ab8dd3ff 100644
--- a/matrix/room_bootstrap.cc
+++ b/matrix/room_bootstrap.cc
@@ -416,7 +416,6 @@ try
 	};
 
 	m::fed::backfill::opts opts{host};
-	opts.dynamic = true;
 	opts.event_id = event_id;
 	opts.limit = size_t(backfill_limit);
 	m::fed::backfill request
@@ -606,7 +605,6 @@ try
 	};
 
 	m::fed::send_join::opts opts{host};
-	opts.dynamic = true;
 	m::fed::send_join send_join
 	{
 		room_id, event_id, event, buf, std::move(opts)
diff --git a/matrix/rooms_summary.cc b/matrix/rooms_summary.cc
index 22ec5c140..87a4eae16 100644
--- a/matrix/rooms_summary.cc
+++ b/matrix/rooms_summary.cc
@@ -74,7 +74,6 @@ ircd::m::rooms::summary::fetch::fetch(const string_view &origin,
 	opts.limit = limit;
 	opts.since = since;
 	opts.include_all_networks = true;
-	opts.dynamic = true;
 	const unique_buffer<mutable_buffer> buf
 	{
 		// Buffer for headers and send content; received content is dynamic
diff --git a/matrix/user_profile.cc b/matrix/user_profile.cc
index 353d605b9..40595f261 100644
--- a/matrix/user_profile.cc
+++ b/matrix/user_profile.cc
@@ -128,12 +128,11 @@ ircd::m::user::profile::fetch(const m::user &user,
 {
 	const unique_buffer<mutable_buffer> buf
 	{
-		64_KiB
+		16_KiB
 	};
 
 	m::fed::query::opts opts;
 	opts.remote = remote?: user.user_id.host();
-	opts.dynamic = true;
 	m::fed::query::profile federation_request
 	{
 		user.user_id, key, buf, std::move(opts)
diff --git a/modules/client/keys/query.cc b/modules/client/keys/query.cc
index 9119f8bdd..b871a0197 100644
--- a/modules/client/keys/query.cc
+++ b/modules/client/keys/query.cc
@@ -324,7 +324,6 @@ try
 {
 	m::fed::user::keys::query::opts opts;
 	opts.remote = remote;
-	opts.dynamic = true;
 	const auto &buffer
 	{
 		buffers.emplace_back(16_KiB)
diff --git a/modules/console.cc b/modules/console.cc
index 55ea9e4ea..9c4481e5a 100644
--- a/modules/console.cc
+++ b/modules/console.cc
@@ -14052,7 +14052,6 @@ console_cmd__fed__key__query(opt &out, const string_view &line)
 	});
 
 	m::fed::key::opts opts;
-	opts.dynamic = true;
 	opts.remote = param.at("remote");
 
 	const unique_buffer<mutable_buffer> buf{24_KiB};
@@ -14091,6 +14090,7 @@ console_cmd__fed__version(opt &out, const string_view &line)
 
 	m::fed::version::opts opts;
 	opts.remote = param.at("remote");
+	opts.dynamic = false;
 	const unique_mutable_buffer buf
 	{
 		16_KiB