[0.83] Reduce e2e test flakiness

[vmoroz]

Cherry pick:

• [0.84] Reduce e2e test flakiness #16045

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Performance Test Results

Branch: PR/0.83-fix-e2e-test-flakiness
Commit: d31a6cd7
Time: 2026-04-29T00:35:35.123Z
Tests: 160/161 passed

❌ Regressions Detected

SectionList

Scenario	Baseline	Current	Change	Status
SectionList with-3-sections-15-items	5.70ms	11.60ms	+100.0%	❌

SectionList with-3-sections-15-items: Duration increased by 100.0% / +5.50ms (threshold: 10% & 3ms)

⚠️ Tracked (not blocking)

Scenario	Baseline	Current	Change
TouchableOpacity multiple-100	50.27ms	69.33ms	+36.0%

✅ Passed

147 scenario(s) across 27 suite(s) — no regressions

FlatList

Scenario	Mean	Median	StdDev	Renders	vs Baseline
FlatList mount	4.00ms	4.00ms	±0.47ms	1	+0.0%
FlatList unmount	0.40ms	0.00ms	±0.52ms	0	+0.0%
FlatList rerender	11.90ms	11.50ms	±1.85ms	2	+27.8%
FlatList with-10-items	5.60ms	5.00ms	±1.58ms	1	+25.0%
FlatList with-100-items	7.00ms	7.00ms	±1.33ms	1	+40.0%
FlatList with-500-items	5.70ms	5.00ms	±2.06ms	1	+25.0%
FlatList with-1000-items	5.40ms	5.00ms	±1.51ms	1	+25.0%
FlatList horizontal	5.30ms	5.00ms	±2.11ms	1	+0.0%
FlatList with-separator	2.80ms	3.00ms	±0.79ms	1	+50.0%
FlatList with-header-footer	2.60ms	3.00ms	±0.52ms	1	+50.0%
FlatList with-empty-list	0.50ms	0.50ms	±0.53ms	1	+0.0%
FlatList with-get-item-layout	1.90ms	2.00ms	±0.74ms	1	+100.0%
FlatList inverted	2.40ms	2.50ms	±0.70ms	1	+66.7%
FlatList with-num-columns	3.00ms	3.00ms	±0.00ms	1	+0.0%

TouchableOpacity

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableOpacity mount	1.10ms	1.00ms	±0.32ms	1	+0.0%
TouchableOpacity unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
TouchableOpacity rerender	1.60ms	2.00ms	±0.70ms	2	+100.0%
TouchableOpacity custom-active-opacity	1.00ms	1.00ms	±0.00ms	1	+0.0%
TouchableOpacity disabled	0.90ms	1.00ms	±0.57ms	1	+0.0%
TouchableOpacity with-all-handlers	1.10ms	1.00ms	±0.32ms	1	+0.0%
TouchableOpacity with-hit-slop	1.00ms	1.00ms	±0.00ms	1	+0.0%
TouchableOpacity with-delay	1.00ms	1.00ms	±0.00ms	1	+0.0%
TouchableOpacity nested	1.70ms	2.00ms	±0.67ms	1	+100.0%
TouchableOpacity multiple-10	7.13ms	7.00ms	±1.77ms	1	+16.7%
TouchableOpacity multiple-50	36.60ms	37.00ms	±4.66ms	1	+27.6%
TouchableOpacity multiple-100	69.33ms	68.00ms	±11.67ms	1	+36.0%

ScrollView

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ScrollView mount	0.40ms	0.00ms	±0.52ms	1	+0.0%
ScrollView unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
ScrollView rerender	0.50ms	0.50ms	±0.53ms	2	-50.0%
ScrollView children-20	3.73ms	3.00ms	±1.94ms	1	-25.0%
ScrollView children-100	18.27ms	17.00ms	±4.18ms	1	+6.3%
ScrollView horizontal	4.60ms	4.00ms	±1.90ms	1	+0.0%
ScrollView sticky-headers	3.10ms	3.00ms	±0.74ms	1	+0.0%
ScrollView scroll-indicators	1.20ms	1.00ms	±0.79ms	1	+0.0%
ScrollView nested	1.70ms	2.00ms	±0.67ms	1	+100.0%
ScrollView content-container-style	0.80ms	1.00ms	±0.42ms	1	+0.0%
ScrollView children-500	42.73ms	29.00ms	±27.35ms	1	+52.6%

TouchableHighlight

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableHighlight mount	0.50ms	0.50ms	±0.53ms	1	+0.0%
TouchableHighlight unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
TouchableHighlight rerender	0.80ms	1.00ms	±0.42ms	2	+0.0%
TouchableHighlight custom-underlay-color	0.50ms	0.50ms	±0.53ms	1	+Infinity%
TouchableHighlight custom-active-opacity	0.40ms	0.00ms	±0.52ms	1	+0.0%
TouchableHighlight disabled	1.10ms	1.00ms	±1.79ms	1	+Infinity%
TouchableHighlight with-all-handlers	0.50ms	0.50ms	±0.53ms	1	+Infinity%
TouchableHighlight with-hit-slop	0.40ms	0.00ms	±0.52ms	1	+0.0%
TouchableHighlight nested-touchables	1.00ms	1.00ms	±0.00ms	1	+0.0%
TouchableHighlight multiple-touchables-10	2.70ms	3.00ms	±0.48ms	1	+0.0%
TouchableHighlight multiple-touchables-50	16.60ms	16.00ms	±2.32ms	1	+28.0%
TouchableHighlight multiple-touchables-100	28.20ms	26.00ms	±6.68ms	1	+15.6%

Pressable

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Pressable mount	0.40ms	0.00ms	±0.52ms	1	+0.0%
Pressable unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Pressable rerender	0.60ms	1.00ms	±0.52ms	2	+100.0%
Pressable with-all-handlers	0.40ms	0.00ms	±0.52ms	1	+0.0%
Pressable with-style-function	0.30ms	0.00ms	±0.48ms	1	+0.0%
Pressable disabled	0.30ms	0.00ms	±0.48ms	1	+0.0%
Pressable with-hit-slop	0.40ms	0.00ms	±0.52ms	1	+0.0%
Pressable nested	0.70ms	1.00ms	±0.48ms	1	+0.0%
Pressable multiple-10	3.40ms	3.00ms	±1.45ms	1	+0.0%
Pressable multiple-50	26.27ms	19.00ms	±12.55ms	1	+35.7%
Pressable multiple-100	20.40ms	17.00ms	±11.44ms	1	+41.7%

Modal

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Modal mount	0.30ms	0.00ms	±0.48ms	1	+0.0%
Modal unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Modal rerender	0.30ms	0.00ms	±0.48ms	2	+0.0%
Modal slide-animation	0.50ms	0.50ms	±0.53ms	1	+Infinity%
Modal fade-animation	0.50ms	0.50ms	±0.53ms	1	+Infinity%
Modal transparent	0.20ms	0.00ms	±0.42ms	1	+0.0%
Modal with-callbacks	0.40ms	0.00ms	±0.52ms	1	+0.0%
Modal rich-content	1.80ms	2.00ms	±0.63ms	1	+0.0%
Modal with-accessibility	0.50ms	0.50ms	±0.53ms	1	+Infinity%

Image

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Image mount	0.20ms	0.00ms	±0.42ms	1	+0.0%
Image unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Image rerender	0.30ms	0.00ms	±0.48ms	2	+0.0%
Image with-resize-mode	0.20ms	0.00ms	±0.42ms	1	+0.0%
Image with-border-radius	0.20ms	0.00ms	±0.42ms	1	+0.0%
Image with-tint-color	0.20ms	0.00ms	±0.42ms	1	+0.0%
Image with-blur-radius	0.10ms	0.00ms	±0.32ms	1	+0.0%
Image with-accessibility	0.20ms	0.00ms	±0.42ms	1	+0.0%
Image multiple-10	0.80ms	1.00ms	±0.41ms	1	+0.0%
Image multiple-50	4.33ms	4.00ms	±1.45ms	1	+33.3%
Image multiple-100	9.40ms	9.00ms	±2.50ms	1	+12.5%

ActivityIndicator

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ActivityIndicator mount	0.30ms	0.00ms	±0.48ms	1	+0.0%
ActivityIndicator unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
ActivityIndicator rerender	0.20ms	0.00ms	±0.42ms	2	+0.0%
ActivityIndicator size-large	0.30ms	0.00ms	±0.48ms	1	+0.0%
ActivityIndicator size-small	0.10ms	0.00ms	±0.32ms	1	+0.0%
ActivityIndicator with-color	0.20ms	0.00ms	±0.42ms	1	+0.0%
ActivityIndicator not-animating	0.00ms	0.00ms	±0.00ms	1	+0.0%
ActivityIndicator with-accessibility	0.20ms	0.00ms	±0.42ms	1	+0.0%
ActivityIndicator multiple-10	1.27ms	1.00ms	±1.03ms	1	+0.0%
ActivityIndicator multiple-50	3.67ms	4.00ms	±0.82ms	1	+0.0%
ActivityIndicator multiple-100	10.00ms	10.00ms	±2.27ms	1	+42.9%

Switch

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Switch mount	0.50ms	0.50ms	±0.53ms	1	+Infinity%
Switch unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Switch rerender	0.40ms	0.00ms	±0.52ms	2	-100.0%
Switch value-true	0.30ms	0.00ms	±0.48ms	1	+0.0%
Switch disabled	0.30ms	0.00ms	±0.48ms	1	+0.0%
Switch custom-colors	0.10ms	0.00ms	±0.32ms	1	+0.0%
Switch on-value-change	0.30ms	0.00ms	±0.48ms	1	+0.0%
Switch with-accessibility	0.20ms	0.00ms	±0.42ms	1	+0.0%
Switch multiple-10	1.87ms	2.00ms	±1.51ms	1	+0.0%
Switch multiple-50	11.13ms	10.00ms	±3.31ms	1	+11.1%
Switch multiple-100	20.73ms	20.00ms	±4.53ms	1	+25.0%

Button

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Button mount	0.60ms	1.00ms	±0.52ms	1	+0.0%
Button unmount	0.10ms	0.00ms	±0.32ms	0	+0.0%
Button rerender	1.60ms	2.00ms	±0.52ms	2	+100.0%
Button disabled	0.80ms	1.00ms	±0.42ms	1	+0.0%
Button with-color	0.80ms	1.00ms	±0.42ms	1	+100.0%
Button with-accessibility	0.40ms	0.00ms	±0.52ms	1	-100.0%
Button multiple-10	6.87ms	6.00ms	±1.85ms	1	+0.0%
Button multiple-50	27.27ms	32.00ms	±11.64ms	1	+18.5%
Button multiple-100	35.00ms	26.00ms	±17.59ms	1	+36.8%

TextInput

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TextInput mount	0.20ms	0.00ms	±0.42ms	1	+0.0%
TextInput unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
TextInput rerender	0.00ms	0.00ms	±0.00ms	2	+0.0%
TextInput multiline	0.20ms	0.00ms	±0.42ms	1	+0.0%
TextInput with-value	0.20ms	0.00ms	±0.42ms	1	+0.0%
TextInput styled	0.20ms	0.00ms	±0.42ms	1	+0.0%
TextInput multiple-100	8.93ms	8.00ms	±2.84ms	1	+14.3%

View

Scenario	Mean	Median	StdDev	Renders	vs Baseline
View mount	0.20ms	0.00ms	±0.42ms	1	+0.0%
View unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
View rerender	0.30ms	0.00ms	±0.48ms	2	+0.0%
View nested-50	3.60ms	4.00ms	±0.83ms	1	+33.3%
View nested-100	9.27ms	9.00ms	±2.34ms	1	+28.6%
View shadow	0.00ms	0.00ms	±0.00ms	1	+0.0%
View border-radius	0.20ms	0.00ms	±0.42ms	1	+0.0%
View nested-500	23.33ms	17.00ms	±14.99ms	1	+70.0%

Text

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Text mount	0.20ms	0.00ms	±0.42ms	1	+0.0%
Text unmount	0.00ms	0.00ms	±0.00ms	0	+0.0%
Text rerender	0.30ms	0.00ms	±0.48ms	2	+0.0%
Text long-1000	0.20ms	0.00ms	±0.42ms	1	+0.0%
Text nested	0.60ms	1.00ms	±0.52ms	1	+Infinity%
Text styled	0.00ms	0.00ms	±0.00ms	1	+0.0%
Text multiple-100	9.47ms	9.00ms	±1.60ms	1	+28.6%

SectionList.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
SectionList native mount	7.65ms	7.57ms	±1.03ms	1	+16.4%

FlatList.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
FlatList native mount	7.23ms	7.00ms	±1.08ms	1	-24.1%

TouchableHighlight.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableHighlight native mount	2.11ms	2.07ms	±0.28ms	1	-0.8%

TouchableOpacity.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TouchableOpacity native mount	2.63ms	2.39ms	±0.53ms	1	-23.8%

Pressable.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Pressable native mount	2.30ms	2.03ms	±0.73ms	1	-19.0%

ScrollView.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ScrollView native mount	4.56ms	4.42ms	±0.64ms	1	+9.2%

ActivityIndicator.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
ActivityIndicator native mount	1.78ms	1.75ms	±0.21ms	1	-29.7%

TextInput.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
TextInput native mount	3.03ms	3.01ms	±0.37ms	1	-26.4%

Switch.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Switch native mount	1.81ms	1.65ms	±0.51ms	1	-4.7%

Button.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Button native mount	2.88ms	2.87ms	±0.72ms	1	+10.4%

Modal.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Modal native mount	1.49ms	1.43ms	±0.23ms	1	+17.4%

Image.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Image native mount	2.47ms	2.27ms	±0.60ms	1	+0.3%

View.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
View native mount	1.67ms	1.46ms	±0.43ms	1	+2.5%

Text.native-perf-test.ts

Scenario	Mean	Median	StdDev	Renders	vs Baseline
Text native mount	1.88ms	1.73ms	±0.40ms	1	-0.3%