you should disable keep alive in properties->general to prevent reusing live sockets with former values (or better leave keep-alive checked and restart the program every time).
especially check it with 16384 versus 8192 - the latter is the system default, so with 8192 you should see the original picture.
it is not autosave set to 10 seconds what matters but something should be actually saved - hard disk should be busy, maybe it is imperfectness in the system workings, it is rather a kind of hack, normally the value is tuned relative to the bandwidth delay and not internal workings like hard drive.