If you turn off cross-site trackers (leaving the rest of the shields enabled) does it help? If so, could you copy/paste the trackers in shields being used?
Btw, I did notice delays of images loading on the site (2-5secs) this is server side. But the images did eventually load. Went from a blurry image -> to the actual image.
Disabling just the site-trackers in shield does not fix the issue.
And further now, the whole page is not rendering properly (uxplanet.org) and (uxdesign.cc), even with the shields down. Both work perfectly fine on Chrome and Firefox.