I am looking at performance improvements for first-load (non-cached) for a Flask/AngularJS delivered webpage (transition to Angular and better route design is in the works, looking for a temporary fix).

This page includes a ton (250+) of JavaScript files on load. We are noticing on that these files are being loaded in series vs in parallel on some machines and not others.

The issue seems to be specific to the Chrome on an AMD machine (v 96.0.4664.93). We are not seeing this on Firefox on the same machine or on Chrome on Intel machines. This difference causes an increase in load time of nearly 15 seconds.

Question is can we force the problematic browser to download these in parallel to the cache? We attempted to use the async attribute in the script tag, but it causes some files to be loaded out of order.