The peer its targetx , targety are not known on the host, nor synched, nor transmitted.
Hence the host never fires the events for peer related movement in event 75.
I would try and add a mouse button clicked (getbit on host's end) to grab the current lookx and looky and set those as targetx and targety. (would prevent synching more variables)
Also, the movement related bit on event 75 is run under a Multiplayer.MyID, that will never fire on the hosts end for other peers, it would need to be in a loop for all peers and host.