Slow Page Speed And Load Time > Quality Content = Less Visitors
Hence, Less Visitors = Less Traffic = Low Sales
Therefore to sum up, Slow Page Speed And Load Time > Quality Content / Less Visitors + Less Traffic
Answer = Kills Your Revenue Generation.
How to improve performance of a page load?
Using Image Thumbnails
Reducing Images size
Avoid Using Plenty Of Images
Avoid Showing Too Many Posts In Single Paid
Break Long Articles With Read More Options
Minimize Use of Scripts
Remove Widgets, Plugins, Java Scripts if you don't need it.
Remove Ads Scripts
How to check page load time?