Ultimate Branding and WordFence Conflict?

After installing WordFence Security (WF) plugin and activating it networkwide, my network's pages, including admin, were served at a page per minute.

Running
P3 (Plugin Performance Profiler), the results pointed to the Ultimate Branding (UB) plugin as the most time intensive. Toggling de/activate it suggested there may be a conflict between WF and UB.

Please advise how else to troubleshoot to find if there's a conflict and, if so, how to resolve it.

Thanks.