I did some research and I see that https://community.pega.com/knowledgebase/articles/pega-platform-client-operating-system-and-browser-support on this webpage, pega clearly states an explicit message to stay away from IE11 when it comes to pega infinity and pega 8.1.

From the URL:

Important Browser Notes

1. The performance of Pega software (like any other browser-based software), is dependent upon the browser that it is running on. For the Pega Infinity version 8.1 software, among the browsers we support (listed above), Google Chrome performs the best, both in its rendering performance and its interactivity, as well as being superior in memory management and garbage collection. Mozilla Firefox, Microsoft Edge, and Safari (on Mac) are also closely comparable in performance to Chrome.

Microsoft Internet Explorer 11 performs the worst among all the supported browsers. Other browsers have innovated heavily over the last few years, while Internet Explorer 11 is purely in maintenance mode. It uses an old and proprietary rendering engine, runs as a single process on the operating system, and has suboptimal memory management. We do continue to support Internet Explorer 11, as many of our customers have standardized on IE11 due to other legacy software that only works on Internet Explorer 11 and prior versions of Internet Explorer.

For Pega Infinity, we recommend that our customers move away from Internet Explorer 11 in favor of using Chrome, Firefox, or Edge on Windows, to get the best performance from their Pega applications.

For Pega 7.3.1 do I consider that the same paragraph below applies when it comes to IE11?

Thank you

***Edited by Moderator Marissa to update platform capability tags****