low download speed from the site

Error description:
Good day.
I wanted to ask why the speed of downloading files fell to dial-up speed? File 30-50MB swinging "forever."
I use a mobile applicationsavagemessiahzine.com.


Browser: Chrome 69.0.3497.100
Skin: Usual

UPD
I went to the forum from the chrome browser indicated in the header. The speed is normal. But! There is a break in the download.

I support, the speed is no 4 - 16 kb / s. Tel: xiaomi mi5s, a regular browser, tried different internet (tele2, MegaFon, 100 mb / s in a row). Nothing changed. From other sites shakes fine.