Recoded the whole Teleportation System, It is now significantly better.
Changes:
+ Teleporting now takes almost no memory usage, It will also work way faster than before
+ Improved un safe block - Suffocation checker between teleports
+ Improved Teleportations In the Nether - End
+ The chunk will now be properly loaded BEFORE you teleport to the Random Location (If it's enabled in the config.yml)
Enjoy !
I would highly suggest you also enable the "load_chunk_before_teleporting" Option in the config.yml As it now works way better than before and it will make teleportation more smooth in general !