A have some problem. Another players can't walk. In chat saying: NCP: test failed SurvivalFly: tried to move unexpectedly. VL 115. And another: NCP: test failed SurvivalFly: tried to move: 3.49, 54.67, 3.98 -> 4.00, 53.50, 4.72 d=1.47 (permchecks+hbufuse+data_reset+vdistrel). VL 450. LOG: https://pastebin.com/1b5ru9g6 Sorry for bad english.
Interesting issue - from what i see so far, it looks like many plugins are running into trouble there - so i think the best is to have more version (and plugin) information, e.g.: 'ncp version' (adds server version and some details) ProtocolLib / other packet API plugins (BKCommonLib, ...) ViaVersion / ProtocolSupport Is the server version really the latest Spigot build one for that version of Minecraft? (Official issue tracker of NCP: https://github.com/NoCheatPlus/Issues/issues - might be easier to find others knowing of similar issues concerning NCP, but other plugins have trouble too, so the forums are a good place to ask.)
You're running 1.9.3 maximally ? There is a spigot update for 1.9.4, unless i am mistaken, is there a reason not to use that? I'm really curious ... if it doesn't matter, i'd really prefer people to rather use latest of 1.9.x (AFAIK 1.9.4), because the Spigot/Bukkit API is most complete there, compared to the earlier builds of 1.9 - however there could be a reason not to prefer 1.9.3, so i'd like to know, if there is one.