docs: attribute the Pinokio stutter report accurately

The workaround came from one Pinokio 8.2.0 user who did not state an OS, and a
single report suggests rather than isolates the embedded-browser cause.

README.md

@@ -119,11 +119,11 @@ Version 8.2 fixes the launcher installation issue;
 
 **Pinokio opens but the globe is very choppy?** Before treating that as a GPU
 compatibility or minimum-hardware problem, copy the local server URL shown by
-Pinokio and open the same URL in your normal hardware-accelerated browser. A
-Pinokio 8.2.0 Linux report reproduced severe stutter in Pinokio's embedded view
-while the same running server was smooth in an external browser ([#365](https://github.com/bilawalsidhu/gods-eye-view/issues/365)).
-That isolates the browser/compositor path from the app server and your machine;
-it does not establish a minimum GPU requirement.
+Pinokio and open the same URL in your normal hardware-accelerated browser. One
+Pinokio 8.2.0 user reported severe stutter in Pinokio's embedded view that went
+away when the same running server was opened in an external browser ([#365](https://github.com/bilawalsidhu/gods-eye-view/issues/365)).
+That points to the embedded browser rather than the app server or your
+hardware; it does not establish a minimum GPU requirement.
 
 ### Path 2 — Terminal / coding agent
 

docs/PERFORMANCE.md

@@ -129,11 +129,11 @@ Use the same controls before attributing a difference to the application:
 7. Treat a live-source outage as missing coverage, not as evidence of low client
    rendering cost.
 8. Record whether the app is running in Pinokio's embedded view or in an
-   external browser. The same Pinokio 8.2.0 Linux server was reported as
-   severely stuttery in the embedded view and smooth when its local URL was
-   opened directly in a normal browser ([#365](https://github.com/bilawalsidhu/gods-eye-view/issues/365)).
-   Treat that as a browser/compositor-path difference until the GPU renderer
-   proves otherwise.
+   external browser. One Pinokio 8.2.0 user reported severe stutter in the
+   embedded view that went away when the same local URL was opened in a normal
+   browser ([#365](https://github.com/bilawalsidhu/gods-eye-view/issues/365)).
+   Do not compare embedded-view and external-browser measurements directly;
+   compare the reported GPU renderer and matched scene settings first.
 
 ## What is not established yet