Photolock has no negative effect on the speed of your website, but if you run a speed test on your site after Photolock is installed, you may see that the result is worse than it was before. Here is why:
Apps installed to your website are loaded after your site finishes loading. It means that if your website loads within 2 seconds, Photolock will start loading after 2 seconds.
This process is called "asynchronous" loading, in other words, it is the process for apps to load in the background without affecting the core of your website.
Even though your site is ready and loaded within the same speed, speed tests will include the time required for Photolock to load in the background and the result will show a longer total load time. This is true for any application. More apps you install, the total load time will appear to increase. This does not mean your website works slower. Photolock is also an extremely lightweight application. Photolock effect's on total load time will be very small.
However, in rare cases, if you install too many apps to your website that are large in size unlike Photolock, the total load time may start to affect the user experience negatively and even may be blocking some elements or conflicting with other apps on your site. Or the core of your website may already be working slower than it should.
If you feel that the case, we recommend hiring an Expert company like us, Pasilobus, to optimize your site for speed.