OK well in answer to my own question, I would say this is a bug in Tixati.
But I accidentally fixed it.. But the speed is unacceptable. Hence it is a bug.
This Queue 1,2,3 item rotating issue is down to this internal management in Tixati...
Simply this does NOTHING. Well scouring the instructions on here:
Where it mentions it is related to Tixati THROTTLE.
The main bandwidth history and throttle is used to decide if a new download should be started from the queue.
Well, on my install of Tixati, I DO NOT want to use any throttle.
But turning ON the button "Auto Limit" in BANDWIDTH tab actually started my stuck download.
But the problem is the overall download is now suck at 61 Kb/sec. Disabling throttle it jumps to 5.5 Mb/sec. Re-enable auto throttle. 61 Kb again. TOO SLOW.
Surely this can be re-worked by the Tixati Dev as this is confusing and I really don't want a throttle enabled to rotate my idle downloads???.
For me, Tixati on throttle mode is really slow and adjusting ping times and rules still doesn't seem to do much.
I disable throttle again and my speed jumped to from Kb to Mb
Hope Tixati read these updates from users. Thanks.