Fierce Friezes with the game (Star Wars: Battlefront (2015))

There were already a couple of such topics, but I could not find a solution, so I duplicate it.

Immediately writing hardware:
AMD Phenom II X4 945 3.0 GHz
GeForce GTX 460
4 GB RAM
Windows 7 64 bit.
all the last firewood.

In theory, the game shouldn't drag on such an ancient typewriter, but played until NG on the minimum settings (except that the "resolution scaling" parameter was set to 100%), during 1-2 hours there were no friezes, only a little lag.
Now, if you play on almost any card, the game freezes thoroughly, taking into account the fact that all settings are set as recommended by nvidia Experience. Lags are especially visible on maps with 40 people. After heavy cards, when a new card is loaded, after 5 minutes, it is thrown into the main menu with a connection error.
Not freezing even once in modes with heroes and in a squadron.

I read some posts - people with slightly better hardware play on average.
I never overclocked iron.
I practice using the Advanced System Care and VitRegistry programs. From the first I launched the so-called. "game mode" - cuts off unnecessary processes - it becomes a little easier, but maybe it's a placebo.

What other solution could there be other than "buy yourself a new computer, rogue"?)

PS And by the way, every time when lags - in the upper right corner writes "unstable connection", although with the Internet all the rules (but maybe she is so complaining about low FPS, xs).