As per our testing, the MainWP Child plugin doesn’t affect your child site loading time. To verify this claim, we used 3 different website speed test tools and measured the site performance with and without the MainWP Child plugin.
Pingdom – Without MainWP Child
Run 1: Load time 299 ms
Run 2: Load time 187 ms
Run 3: Load time 237 ms
The average load time for the site with the MainWP Child plugin deactivated is 241 ms.
Pingdom – With MainWP Child
Run 1: Load time 244 ms
Run 2: Load time 187 ms
Run 3: Load time 234 ms
The average load time for the site with the MainWP Child plugin activated and connected to a MainWP Dashboard is 221 ms.
Lighthouse – Without MainWP Child
Run 1: Load time 0.3 s
Run 2: Load time 0.4 s
Run 3: Load time 0.3 s
The average load time for the site with the MainWP Child plugin deactivated is 0.33 s.
Lighthouse – With MainWP Child
Run 1: Load time 0.4 s
Run 2: Load time 0.3 s
Run 3: Load time 0.3 s
The average load time for the site with the MainWP Child plugin activated and connected to a MainWP Dashboard is 0.33 s.
GTMetrix – Without MainWP Child
Run 1: Load time 979 ms
Run 2: Load time 927 ms
Run 3: Load time 893 ms
The average load time for the site with the MainWP Child plugin deactivated is 933 ms.
GTMetrix – With MainWP Child
Run 1: Load time 977 ms
Run 2: Load time 901 ms
Run 3: Load time 974 ms
The average load time for the site with the MainWP Child plugin activated and connected to a MainWP Dashboard is 951 ms.