I tested the new Chromium on Win XP. It runs faster than Supermium. But there are a few things to note.
The RAM consumption bug when C++ is installed can be resolved by adding the corrected_api_sets.zip folder from Supermium. In XP x64, there is enormous virtual memory consumption, and I haven't found a solution.
WebGL is completely disabled, even the software version, which means that websites that require it do not work.
Manifest v2 is available but disabled by default. You need to add the parameter --disable-features=ExtensionManifestV2Unsupported,ExtensionManifestV2Disabled to the shortcut.
To disable the notification that the OS is not supported, add --test-type to the shortcut.
The browser requires a CPU with SSE3.
Browser crash during import fixed in version 144.