diff --git a/.config/nextest.toml b/.config/nextest.toml
index f90bc77a36333..8fc876b229a5c 100644
--- a/.config/nextest.toml
+++ b/.config/nextest.toml
@@ -29,6 +29,7 @@ fail-fast = false
 
 [test-groups]
 serial = { max-threads = 1 }
+io-bound = { max-threads = 1 }
 
 [[profile.default.overrides]]
 filter = 'test(native_auth)'
@@ -37,3 +38,9 @@ test-group = 'serial'
 [[profile.default.overrides]]
 filter = 'package(uv-keyring)'
 test-group = 'serial'
+
+[[profile.ci-windows.overrides]]
+platform = 'cfg(target_os = "windows")'
+filter = 'test(/^python_install::/) + test(/^python_update::/) + test(/^python_find::/)'
+test-group = 'io-bound'
+priority = 1 # Start earlier so these can complete before the end