Hugs two other things to try:
(1) use an alt, with minimal atachments & scripts, and try your TPs
will test the attachment therory, and network issues.
(2) keep a RL list of favorite TP addresses,
NAME, sim/x/y/z
re-log and set start location to Sim/x/y/z
do find I can get there, if the Sim is available.
Good luck