Orange LTE Internet in the countryside - what about signal reception?

I am interested in LTE internet in the countryside. I have 3.6 km to Bsa from Orange, but about 500m of forest along the way. On the phone outside it caught LTE, speeds of about 20Mbps, but I am interested in the stability of such a connection and the lowest possible pings. Is there a chance for something more with a good external antenna placed on the chimney? Is it best to try just with the antenna and return it if something does not fit? The LTE transmitter is Orange ID: 5717 in Moszna in Lublin.

Enter the city, do LTE Orange tests on an LTE phone with the Network Cell Info application, show the screen. The program shows LTE signal parameters and BTS data. In Orange, a subscription with hardware, i.e. LTE Internet for the home, for 59.90, and only a router with LTE-A, i.e. MF286 for PLN 0, is taken from the equipment.

This is how it is. My location is at the end of the line from BSa that seems to be the closest to me. Please answer what I can count on.

BTS LTE800 Orange in the Mountains. Signal parameters on the NCI on the phone outside good. How far to BTS?

The map shows more or less 4.6 km. So if I bought a nice antenna, connected to the router, it would have a raison d'etre?

The antenna will stabilize the connection and improve the signal parameters. But the speeds also depend on the load on this BTS. For this distance, you need 2xATK-10 / 800-980. Arranged in vertical and horizontal polarization.