What may be happening is because it is a Hyperlink to something somewhere, Your system may be scanning the link and all associated data for a virus / malware and that may take it a long time. Also, I have had systems where the browser cache has a huge amount unneeded historical data and then the system has to scan through it before the link will open. Remember that it is downloading all the associated data in that link to your PC / Smart device. I have found that clearing the browser cache helps this issue. I have also had firewalls and AV / Antimalware block links because the link may have something in it that AV / Antimalware does not like, but is legitimate. This may include things that are imbedded into documents, video’s and pictures as wall as Flashfiles.