err gfx d3d init (Grand Theft Auto 5)

guys this trick
Hardware: AMD RADEON 7770
Intel i5 4440
4 gb RAM
There are departures not only in GTA 5
And in all games
If I don't put in the settings MSAA 8x
For example in cs go
If I put MSAA 8x the missions will not be
If not put up,crashes after 15 minutes of the game
Example in GTA 5
Do not expose MSAA 8x
Departure in 5 minutes
Put MSAA 8x little fps
Will take off after an hour and a half
Please help
Tired already with this garbage to live.
The computer will only update in the autumn(