LTSpice's ltline (lossy transmission line) symbol slowing down the simulation process. What can I do?

LTSpice has the element called Lossy transmission line (symbol name ltline):

I tried to simalate a pretty simple schematic:

• R2,R3 and R4 resistors are for solve floating node problem.

Simulation of this scheme is extremely slow (about 30us/sec). If I remove the ltline symbols and replace them with a wire or a resistor the simulation speed is a link of an eye!

However I need an element representing an electrical wire. Is there any solution?

Thanks!

UPDATE 1

After making the simulation times shorter (1ms) I received some kind of a result:

And I make a note that if the O1 line becomes shorter the simulation time rises.

Answer

Simulating a transmission line is hard!

The Spice model used will be a very long array of RLC lumped elements to simulated the basic model of a transmission line. With so many elements to simulate it will take a long time. Removing the transmission line will in turn remove all the many elements and so it will speed up.