What could be causing my internet to be slow while using online banking services?

1. Check if the issue is limited to any specific browser; if so, try a different browser.
2. Check if issue is for online banking services only or occurs for all internet activities.
3. Evaluate the speed and security of the network connection both at the computer and router.
4. Clear the browser cookies and history if issue is limited to any specific website.
5. Check firewalls and/or antivirus packages that could be interfering with the speed.