[469c] Jittering while spectating a game with behindview 0

garry-ut99 commented 1 year ago

while spectating a game, after typing behindview 0 to spectate in 1st person, jittering appears.
after switching back to behindview 1, the jittering dissappears, so only behindview 0 is affected.
it happens while spectating an online game (469c server) or a demoplay from an online game (udemo 3.5.1), but not while spectating a local off-line game with bots
the jittering incerases dramatically while using slomo, for example slomo 0.25, to the point it's described by players as lagging
other players already confirmed the issue, and they complain about jittering: LINK 1 + LINK 2 + LINK 3
using SPECFIX like advised IN THIS THREAD fixes the issue while spectating online games, but doesn't fix while playing demoplay

SeriousBuggie commented 1 year ago

I suspect this jitter caused by replication data, which come from net. Update player rotation. Possible spec fix make smooth of it.

stijn-volckaert commented 1 year ago

Indeed. This is a fundamental limitation of the UE1 netcode. Servers try to save bandwidth by compressing some of the data they send to players. This compression costs us some precision in things like (camera/player) rotation updates

OldUnreal / UnrealTournamentPatches

[469c] Jittering while spectating a game with behindview 0 #1267