Our servers generally run at a small fraction of their overall load capacity, so lag at our end is not typically an issue, and we had no issues or significant traffic surges this morning that could have affected our system performance.



If the cart itself seemed slow to display, the most likely cause would be network congestion or routing issues either at your ISP or somewhere along the path across the Internet between your ISP and our Tucson datacenter.



If the lag occurred after you'd clicked a checkout button e.g. for PayPal, then at that point the cart is just stalling while waiting for the checkout site to respond, so any lag would be due to issues at their end.

I know this post is old, but I have been experiencing this often, loading the modal after clicking "Add to Cart" and after clicking "Checkout" it lags for at least 20-30 seconds and spins, but I'll receive the purchase email right away, thoughts?

I also noticed that when clicking "Add to Cart" it will pop the intended modal (cart) with transparent background (doesn't do this in ipad). But when clicking "Pay with Card" it stalls and goes full screen, how would I code to allow for the checkout process to be contained in the modal (like your demo)?

Thanks!

Our checkout screen for card-based direct payment will automatically appear within iyr cart overly on your own sales page if your page loads with an https:// URL (rather than the usual http://). Consult your site hosting help pages or support staff for how to enable HTTPS for your site.

Development is aware that our cart and admin panels have become sporadically sluggish to respond lately, so they're investigating the reason for that.