diff --git a/README.md b/README.md
index 3cda2f17..061a4f1a 100644
--- a/README.md
+++ b/README.md
@@ -506,6 +506,9 @@ MiniDeps.add({
       auto_show = false,
       auto_show_delay_ms = 500,
       update_delay_ms = 50,
+      -- whether to use treesitter highlighting for the documentation window, disable if you run into performance issues
+      -- WARN: temporary, eventually blink will support regex highlighting
+      treesitter_highlighting = true,
     },
     signature_help = {
       min_width = 1,
@@ -520,6 +523,9 @@ MiniDeps.add({
       -- which directions to show the window,
       -- falling back to the next direction when there's not enough space
       direction_priority = { 'n', 's' },
+      -- whether to use treesitter highlighting for the documentation window, disable if you run into performance issues
+      -- WARN: temporary, eventually blink will support regex highlighting
+      treesitter_highlighting = true,
     },
     ghost_text = {
       enabled = false,
diff --git a/lua/blink/cmp/config.lua b/lua/blink/cmp/config.lua
index 24e0576b..88284a82 100644
--- a/lua/blink/cmp/config.lua
+++ b/lua/blink/cmp/config.lua
@@ -152,6 +152,7 @@
 --- @field auto_show? boolean
 --- @field auto_show_delay_ms? number Delay before showing the documentation window
 --- @field update_delay_ms? number Delay before updating the documentation window
+--- @field treesitter_highlighting? boolean Whether to use treesitter highlighting for the documentation window, disable if you run into performance issues
 
 --- @class blink.cmp.SignatureHelpConfig
 --- @field min_width? number
@@ -162,6 +163,7 @@
 --- @field winhighlight? string
 --- @field scrollbar? boolean
 --- @field direction_priority? ("n" | "s")[]
+--- @field treesitter_highlighting? boolean Whether to use treesitter highlighting for the documentation window, disable if you run into performance issues
 
 --- @class GhostTextConfig
 --- @field enabled? boolean
@@ -493,6 +495,9 @@ local config = {
       auto_show = false,
       auto_show_delay_ms = 500,
       update_delay_ms = 50,
+      -- whether to use treesitter highlighting for the documentation window, disable if you run into performance issues
+      -- WARN: temporary, eventually blink will support regex highlighting
+      treesitter_highlighting = true,
     },
     signature_help = {
       min_width = 1,
@@ -507,6 +512,9 @@ local config = {
       -- which directions to show the window,
       -- falling back to the next direction when there's not enough space
       direction_priority = { 'n', 's' },
+      -- whether to use treesitter highlighting for the documentation window, disable if you run into performance issues
+      -- WARN: temporary, eventually blink will support regex highlighting
+      treesitter_highlighting = true,
     },
     ghost_text = {
       enabled = false,
diff --git a/lua/blink/cmp/windows/documentation.lua b/lua/blink/cmp/windows/documentation.lua
index a17c656c..a0e82ada 100644
--- a/lua/blink/cmp/windows/documentation.lua
+++ b/lua/blink/cmp/windows/documentation.lua
@@ -62,7 +62,8 @@ function docs.show_item(item)
           docs.win:get_buf(),
           item.detail,
           item.documentation,
-          docs.win.config.max_width
+          docs.win.config.max_width,
+          config.treesitter_highlighting
         )
       end
       docs.shown_item = item
diff --git a/lua/blink/cmp/windows/lib/docs.lua b/lua/blink/cmp/windows/lib/docs.lua
index 7eedc2ca..318ac4ba 100644
--- a/lua/blink/cmp/windows/lib/docs.lua
+++ b/lua/blink/cmp/windows/lib/docs.lua
@@ -3,7 +3,9 @@ local docs = {}
 --- @param bufnr number
 --- @param detail? string
 --- @param documentation? lsp.MarkupContent | string
-function docs.render_detail_and_documentation(bufnr, detail, documentation, max_width)
+--- @param max_width number
+--- @param use_treesitter_highlighting boolean
+function docs.render_detail_and_documentation(bufnr, detail, documentation, max_width, use_treesitter_highlighting)
   local detail_lines = {}
   if detail and detail ~= '' then detail_lines = docs.split_lines(detail) end
 
@@ -30,7 +32,7 @@ function docs.render_detail_and_documentation(bufnr, detail, documentation, max_
   -- Highlight with treesitter
   vim.api.nvim_buf_clear_namespace(bufnr, require('blink.cmp.config').highlight.ns, 0, -1)
 
-  if #detail_lines > 0 then docs.highlight_with_treesitter(bufnr, vim.bo.filetype, 0, #detail_lines) end
+  if #detail_lines > 0 and use_treesitter_highlighting then docs.highlight_with_treesitter(bufnr, vim.bo.filetype, 0, #detail_lines) end
 
   -- Only add the separator if there are documentation lines (otherwise only display the detail)
   if #detail_lines > 0 and #doc_lines > 0 then
@@ -42,7 +44,7 @@ function docs.render_detail_and_documentation(bufnr, detail, documentation, max_
     })
   end
 
-  if #doc_lines > 0 then
+  if #doc_lines > 0 and use_treesitter_highlighting then
     local start = #detail_lines + (#detail_lines > 0 and 1 or 0)
     docs.highlight_with_treesitter(bufnr, 'markdown', start, start + #doc_lines)
   end
diff --git a/lua/blink/cmp/windows/signature.lua b/lua/blink/cmp/windows/signature.lua
index 19b66228..f0d200dc 100644
--- a/lua/blink/cmp/windows/signature.lua
+++ b/lua/blink/cmp/windows/signature.lua
@@ -51,7 +51,8 @@ function signature.open_with_signature_help(context, signature_help)
       signature.win:get_buf(),
       active_signature.label,
       active_signature.documentation,
-      config.max_width
+      config.max_width,
+      config.treesitter_highlighting
     )
   end
   signature.shown_signature = active_signature