folks. my whatsup like some others have reported) keeps lagging with the yellow popup that says it has hung and whether you want to wait or terminate the task.

today i noticed when on wifi, the lag seems shorter. then i switched to 4g and it was lagging like normal (since i use 4g all the time). then when whatsup had hung, i immediately disconnected data and instantly whatsup stopped lagging and was very very smooth.

so the issue seems related to networking code. tcp blocking mode? asynch vs synch? no idea but i hope this bit of information can help someone pinpoint the source of the lag / slow down.