How to reproduce:
1. Open project "Repository.zip"
2. Open the Test Runner window (Window>General>Test Runner)
3. Go to Weaver>Tests>WeaverClientRpcTests>VirtualClientRpc and run it
4. Open the Console window for results

Expected result: Test has similar performance between Unity 2020.3, 2021.2, and 2022.2.
Actual result: Test is 3X faster in 2020.3 when compared to all later versions of Unity.

Reproducible with: 2021.2.10f1, 2022.1.0b6

Notes:
Test Runner results that I've got. The numbers vary a little from run-to-run, but are basically:
2020.3.27f1 - 347ms
2021.2.10f1 - 1046ms
trunk - 1046ms