Holding Jump is framerate dependent
Steps to recreate;
This might not be a problem for regular scale games with tiny little hops but for a game with slightly-smaller-than-average characters and longer jump hold times, it really affects gameplay.
I have been able to reproduce your issue, and have entered a bug report (UE-23695). Thank you for your report.
Have a great day,
answered Nov 20 '15 at 04:50 PM
Sean L ♦♦ STAFF
Follow this question
Once you sign in you will be able to subscribe for any updates here