Diagnosis
This is almost always a data transfer issue, not the printer's physical speed. The connection (usually Wi-Fi) is dropping packets, so the printer has to wait for more data.
How to Fix It
First, check your connection. Print a network configuration page from the printer's control panel (Setup > Reports > Network Configuration Page). See if the signal strength is 'Good' or 'Fair'. If it's fair or poor, move the printer or router, or remove obstructions. Try printing the same document using a USB cable—if it's fast via USB, you've confirmed it's the Wi-Fi.
If That Didn't Work
The print driver settings might be wrong. On your computer, go to Printers & Scanners, select your 7602, go to Printing Preferences. Look for a 'Paper/Quality' tab. Ensure 'Print Quality' is set to 'Normal' or 'Draft', not 'Best'. 'Best' mode forces slower, high-precision printing and uses way more ink.
Heads Up
Printing complex graphics or full-page photos will always be slow on an inkjet. If you're printing a web page or a PDF with lots of images, try the 'Print as Image' option in the advanced print dialog—it often processes faster.