When accessing the LoadRunner Enterprise Web Client, on a Windows machine, Micro Focus states the following:
"* For optimal performance on Windows, we recommend using Google Chrome."

Also, in the list of supported browsers, Micro Focus states Chrome as the "Recommended" browser to use.

To review this in the Official Micro Focus document, click on the following link:
https://admhelp.microfocus.com/documents/pc/2020.1/LR_System_Requirements.pdf

Scroll down to page 12, and in the "LoadRunner Enterprise Web Client System Requirements" section, the above information can be found.