This is a (multiple allowed):
Resize window to a width smaller than 1000px. Switched slides using mouse to the very end.
The swiper should perform the same for each slide.
Swiper performance drops significantly when negative translate3d on swiper-wrapper exceedes windows width so first slides work as intended and last slides are stuttering heavily.
Was discussed here, can't do much here. It is FF issue
OK then thank you for the response. I've reported the issue into bugzilla as well
https://bugzilla.mozilla.org/show_bug.cgi?id=1436316
@nolimits4web This issue has been fully resolved in the latest Firefox Dev version 60.0b4
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@nolimits4web This issue has been fully resolved in the latest Firefox Dev version 60.0b4