Perf regression: antiforgery-noop, https, json

[pr-benchmarks]

Scenario	Environment	Date	Old RPS	New RPS	Change	Deviation	StDev	Dependencies
antiforgery-noop	Antiforgery No Operation 10- Trends idna-amd-lin	09/14/2026 22:07:47	122,120	97,936	-19.80 % (-24,185) 👎	-8.52 σ	2,838.02	Changes Name Version Diff Microsoft.AspNetCore.Antiforgery.dll 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110 Microsoft.AspNetCore.App 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110 Microsoft.NETCore.App 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110
https	Json Https 10- Trends idna-amd-lin	09/14/2026 22:01:51	83,717	75,802	-9.45 % (-7,915) 👎	-2.29 σ	3,459.05	Changes Name Version Diff Microsoft.AspNetCore.Antiforgery.dll 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110 Microsoft.AspNetCore.App 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110 Microsoft.NETCore.App 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110
json [Fixed]	Json Platform Inline 10- Trends idna-amd-lin	09/14/2026 21:49:32	175,800	155,548	-11.52 % (-20,252) 👎	-4.37 σ	4,636.81	Changes Name Version Diff Microsoft.AspNetCore.Antiforgery.dll 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110 Microsoft.AspNetCore.App 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110 Microsoft.NETCore.App 11.0.0-rc.2.26462.109 -> 11.0.0-rc.2.26463.103 dotnet/dotnet@3898736...1c83110

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@sebastienros

[github-actions]

Triage Summary

Area: area-perf (already applied; automated benchmark report of RPS regressions across antiforgery-noop, https, and json scenarios)
Type: Bug (reproducible RPS regressions of -19.80%, -9.45%, and -11.52% reported against a specific dependency version change, i.e. broken performance vs. the prior build)

Potential Duplicates

• None found

Generated by Issue Triage Agent for dotnet/aspnetcore for #69339 · copilot · auto · 74 AIC · ⌖ 12.9 AIC · ⊞ 28K · ◷