Appreciate your explanation on everything, though I had wondered more on the point as to why such a huge spike in latency yest. very early on in the morning.Might be better to just take a screenshot of the results rather than copy and paste to keep the format.
There will always be jitter on wireless as the CPE compensate for signal noise which is always changing.
When it comes to towers and their bandwidth it's a difficult thing to predict and to say what speeds are acceptable and which are not. As you know Spectrum is expensive and networks just don't have enough vs demand. Tower bandwidth for this reason is a finite resource and it's shared between users of that tower. You might find that 10 x people are all downloading large files as the same time and that will drag the average speed of each user down until the heavy users are down with their file transfers.
That's just how bandwidth is shared. You won't get a situation where 1 user will be able to all the bandwidth but high data users drags the average speeds shared between users down so speed can vary significantly.
Towers also face issues with power and backhaul. MTN has an extensive fibre backhaul for their towers but if that goes down the tower might fall back to microwave links which aren't as fast which will reduce the available bandwidth even more.
From the trace routes provided it's difficult to determine if a tower is congested as MTn filters those IP's out not to respond and the first IP that responds is a switch on our network.
The speeds I'm in fact very happy with given it's set to 1800 MHz frequency, especially the upload.
It therefore seems from what you described, that there's no real point in doing these MTR tests for LTE, but I certainly learnt something & if I move to fibre it'll be appropriate then & at least will be prepared to submit them from the outset, if necessary.
