Pavlovia Different Browsers/Versions Not Fading In/Out Image Stimuli Correctly

URL of experiment: https://gitlab.pavlovia.org/LillyMcClendon/two_city_images_public.git

Description of the problem: We want to have two image stimuli (one left, one right), seamlessly morph into other photos. On various versions of browsers, it is not running correctly, there are pauses/stopping between photos (below are browsers where it did and didn’t work). Is there a solution to having the images fade in/out smoothly with different browsers?

It works correctly on Pavlovia when using
-MacBook Air/Pro (Chrome arm64, Chrome Official build arm64, Safari)
-HP (Chrome 122.0.6261.57 official build 64 bit)

It doesn’t work correctly on Pavlovia when using
-Thinkpad (Firefox)
-Macbook Pro (Chrome 121.0.6167.160 official build x86_64)