@TenchyUnfortunately the problem appears to be upstream from us. There is some packet loss occurring at hop 3, and instability in response times at hops 7 and 8. These issues are what are causing your disconnects. Additionally, there is a big jump in latency between hop 6 and 7. You may be able to contact your ISP for help, especially with hop 3 which is probably owned by your ISP. Finally your video card may be part of the issue - it is part of the Radeon HD 7000 series of cards which we do not support. See the excerpt below from our first post.
For users who are faced with the problem of low game performance, frequent "freezes", "disconnects" or "hangs", whose computers are equipped with the following listed video cards:
AMD Radeon R5 235X, Radeon R5 235, Radeon R5 230, Radeon R5 220 Series Graphics
AMD Radeon ™ HD 8470, Radeon ™ HD 8350, Radeon ™ HD 8000 (D / G variants) Series Graphics
AMD Radeon ™ HD 7000 (including A / D / G / M variants) Series Graphics
AMD Radeon ™ HD 6000 (including A / D / G / M variants) Series Graphics
AMD Radeon ™ HD 5000 (including M variant) Series Graphics
We are forced to report that AMD has declared the video card data obsolete. Update drivers for these video cards was suspended in 2015 and today they are no longer supported. Users who are keen on computer games, AMD advises to switch to the use of more modern video cards.
The developers of RF4, for their part, will make efforts and try to eliminate the problems arising in the game due to the incorrect operation of the listed video cards.