Perf regression: antiforgery-noop, fortunes

| Scenario | Environment | Date | Old RPS | New RPS | Change | Deviation | StDev | Dependencies |
| -------- | ----------- | ---- | ------- | ------- | ------ | --------- | ----- | ------------ |
| antiforgery-noop [Fixed] | Antiforgery No Operation 9- Trends cobalt-cloud-lin | 07/08/2026 23:26:04 | 174,040 | 162,848 | -6.43 % (-11,192) :thumbsdown: | -4.55 σ | 2,461.35 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.7.26356.111` -> `11.0.0-preview.7.26358.115` https://github.com/dotnet/dotnet/compare/bde6fe9b661b314bff4df30a30538f91ebd28e74...7e4a38ab53c654ffcb137db7b68831cc76753306 Microsoft.AspNetCore.App `11.0.0-preview.7.26356.111` -> `11.0.0-preview.7.26358.115` https://github.com/dotnet/dotnet/compare/bde6fe9b661b314bff4df30a30538f91ebd28e74...7e4a38ab53c654ffcb137db7b68831cc76753306 Microsoft.NETCore.App `11.0.0-preview.7.26356.111` -> `11.0.0-preview.7.26358.115` https://github.com/dotnet/dotnet/compare/bde6fe9b661b314bff4df30a30538f91ebd28e74...7e4a38ab53c654ffcb137db7b68831cc76753306 |
| fortunes | Fortunes Platform 13- Trends Database cobalt-cloud-lin | 07/09/2026 01:01:48 | 59,898 | 58,207 | -2.82 % (-1,691) :thumbsdown: | -2.65 σ | 639.17 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.7.26356.111` -> `11.0.0-preview.7.26358.115` https://github.com/dotnet/dotnet/compare/bde6fe9b661b314bff4df30a30538f91ebd28e74...7e4a38ab53c654ffcb137db7b68831cc76753306 Microsoft.AspNetCore.App `11.0.0-preview.7.26356.111` -> `11.0.0-preview.7.26358.115` https://github.com/dotnet/dotnet/compare/bde6fe9b661b314bff4df30a30538f91ebd28e74...7e4a38ab53c654ffcb137db7b68831cc76753306 Microsoft.NETCore.App `11.0.0-preview.7.26356.111` -> `11.0.0-preview.7.26358.115` https://github.com/dotnet/dotnet/compare/bde6fe9b661b314bff4df30a30538f91ebd28e74...7e4a38ab53c654ffcb137db7b68831cc76753306 |

[PowerBI Dashboard](https://aka.ms/aspnet/benchmarks)

@sebastienros

Start with the antiforgery-noop and fortunes benchmark results in this issue, then compare the linked dependency commit range for Microsoft.AspNetCore.Antiforgery.dll and related runtime packages. Identify the change responsible for the reported RPS regression and confirm that benchmark performance returns to the expected range.

Written by the indexing model from the issue text.