Web page freezes, when attempting to draw the Flexmonster JS component

Sometimes, the entire page & browser tab freezes, when we try to draw up the Flexmonster component. It's impossible to debug,
since there are no errors in the console, when it happens, and the debug tool freezes as well.
It happens for both CSV and Mondrian datasources.
Code:
 
scope:
  cube: '='
template: '<div><div class="center-overlay"><i class="fa fa-pulse fa-spinner" style="font-size:7vh"></i></div><div id="cubeVisualizer"></div></div>'
.
.
if cube.ds.type == 'mondrian'
reportData =
dataSource:
dataSourceType: 'mondrian'
proxyUrl: MONDRIAN_HOST
catalog: cube.ds.schema
cube: cube.ds.name
binary: true
options : cube.options || null
slice: cube.slice || null
else if cube.ds.type == 'csv'
reportData =
dataSource : { filename : "#{BASE_HOST}/data/#{cube.ds.schema}" }
options : cube.options || null
slice : cube.slice || null
.
.
report = element.find('#cubeVisualizer').first().flexmonster
toolbar: true
report: reportData
width: $('.cube-container').first().width()
height: element.parents('body').outerHeight() - 100
licenseKey: FLEXMONSTER_KEY
 
Have attached an image with the frozen screen and console window.