diff --git a/packages/vitest/src/node/sequencers/BaseSequencer.ts b/packages/vitest/src/node/sequencers/BaseSequencer.ts
index c3218dfd6..9ab923062 100644
--- a/packages/vitest/src/node/sequencers/BaseSequencer.ts
+++ b/packages/vitest/src/node/sequencers/BaseSequencer.ts
@@ -35,6 +35,25 @@ export class BaseSequencer implements TestSequencer {
   public async sort(files: TestSpecification[]): Promise<TestSpecification[]> {
     const cache = this.ctx.cache
     return [...files].sort((a, b) => {
+      // "sequence.groupOrder" is higher priority
+      const groupOrderDiff = a.project.config.sequence.groupOrder - b.project.config.sequence.groupOrder
+      if (groupOrderDiff !== 0) {
+        return groupOrderDiff
+      }
+
+      // Projects run sequential
+      if (a.project.name !== b.project.name) {
+        return a.project.name < b.project.name ? -1 : 1
+      }
+
+      // Isolated run first
+      if (a.project.config.isolate && !b.project.config.isolate) {
+        return -1
+      }
+      if (!a.project.config.isolate && b.project.config.isolate) {
+        return 1
+      }
+
       const keyA = `${a.project.name}:${relative(this.ctx.config.root, a.moduleId)}`
       const keyB = `${b.project.name}:${relative(this.ctx.config.root, b.moduleId)}`
 
diff --git a/test/core/test/sequencers.test.ts b/test/core/test/sequencers.test.ts
index cb65a9949..b55a16134 100644
--- a/test/core/test/sequencers.test.ts
+++ b/test/core/test/sequencers.test.ts
@@ -7,7 +7,7 @@ import { TestSpecification } from '../../../packages/vitest/src/node/spec'
 function buildCtx(config?: Partial<Vitest['config']>) {
   return {
     config: {
-      sequence: {},
+      sequence: { groupOrder: 0 },
       ...config,
     },
     cache: {
@@ -22,6 +22,7 @@ function buildWorkspace() {
     name: 'test',
     config: {
       root: import.meta.dirname,
+      sequence: { groupOrder: 0 },
     },
   } as any as TestProject
 }
diff --git a/test/coverage-test/vitest.config.ts b/test/coverage-test/vitest.config.ts
index ffbd591eb..7eb15f7f8 100644
--- a/test/coverage-test/vitest.config.ts
+++ b/test/coverage-test/vitest.config.ts
@@ -19,7 +19,6 @@ export default defineConfig({
         extends: true,
         test: {
           name: { label: 'v8', color: 'green' },
-          sequence: { groupOrder: 1 },
           env: { COVERAGE_PROVIDER: 'v8' },
           include: [GENERIC_TESTS, V8_TESTS],
           exclude: [
@@ -37,7 +36,6 @@ export default defineConfig({
         extends: true,
         test: {
           name: { label: 'istanbul', color: 'magenta' },
-          sequence: { groupOrder: 2 },
           env: { COVERAGE_PROVIDER: 'istanbul' },
           include: [GENERIC_TESTS, ISTANBUL_TESTS],
           exclude: [
@@ -55,7 +53,6 @@ export default defineConfig({
         extends: true,
         test: {
           name: { label: 'custom', color: 'yellow' },
-          sequence: { groupOrder: 3 },
           env: { COVERAGE_PROVIDER: 'custom' },
           include: [CUSTOM_TESTS],
           exclude: [FIXTURES],
@@ -67,7 +64,6 @@ export default defineConfig({
         extends: true,
         test: {
           name: { label: 'istanbul-browser', color: 'blue' },
-          sequence: { groupOrder: 4 },
           env: { COVERAGE_PROVIDER: 'istanbul', COVERAGE_BROWSER: 'true' },
           testTimeout: 15_000,
           include: [
@@ -99,7 +95,6 @@ export default defineConfig({
         extends: true,
         test: {
           name: { label: 'v8-browser', color: 'red' },
-          sequence: { groupOrder: 5 },
           env: { COVERAGE_PROVIDER: 'v8', COVERAGE_BROWSER: 'true' },
           testTimeout: 15_000,
           include: [
@@ -133,7 +128,6 @@ export default defineConfig({
         extends: true,
         test: {
           name: { label: 'unit', color: 'cyan' },
-          sequence: { groupOrder: 6 },
           include: [UNIT_TESTS],
           typecheck: {
             enabled: true,