Why am I getting worse FPS with my R9 280 3gb then I was with my old GTX650 1gb?

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leyton1

leyton1

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Dec 6, 2013
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This only happens in some games.

Some games I get this problem with:
Far Cry 4
Assassins creed Black Flag

Games I dont get this problem with:
Saints Row 4
Dying light
Metro 2033 and last light

My spec

Operating System
Windows 8.1 Pro 64-bit
CPU
AMD FX-4130:
RAM
12.0GB Dual-Channel DDR3 @ 429MHz (6-6-6-15)
Motherboard
ASRock 970 Extreme3 R2.0 (CPUSocket): 30 °C
Graphics
SAMSUNG (1360x768@60Hz)
Generic Non-PnP Monitor (1440x900@60Hz)
3072MB ATI AMD Radeon R9 200 Series (Sapphire/PCPartner): 61 °C
Storage
111GB SanDisk SDSSDX120GG25 ATA Device (SSD): 25 °C
465GB Seagate ST3500312CS ATA Device (SATA): 28 °C
111GB OCZ-ARC100 ATA Device (SSD)
465GB Seagate ST3500312CS ATA Device (SATA): 28 °C

Dont know if this helps but on the games i get this problem with my CPU is at like 70-99%

 
Solution
ko888
That seems to be a common problem.

After the game is up and running, switch to the Windows Task Manager's Processes tab page.

Find and select the AC4BFSP.exe or AC4BFMP.exe process for Assassin's Creed IV: Black Flag. Right-Click on the selected process and select the Set Affinity... option. Unselect (i.e. uncheck the check box for) the last processor and click on the OK button. Switch back to the game and then switch back to the Windows Task Manager and change the Set Affinity... setting back to <All Processors>.

Some have reported that this results in the CPU usage leveling out among all of the processor cores.
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ko888

ko888

Titan
Feb 18, 2009
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84,990
High CPU usage is generally an indication of a CPU bottleneck.

Lower display resolutions will actually place a higher processing load on the CPU. If the CPU is unable to feed data to the graphics card quickly enough then the FPS will drop.
 
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leyton1

leyton1

Honorable
Dec 6, 2013
101
0
10,680


Dont know If im going about this wrong but ive also tried running in 1920x1080 on another screen with was the native resoultion with no increse in FPS

 
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ko888

ko888

Titan
Feb 18, 2009
16,708
41
84,990
Your problem seems to be limited to Ubisoft games. Both of those games are bug ridden. They also tend to favor nVidia graphics cards since Ubisoft has a partnership with nVidia.

CPU bottle-necking does occur on some system configurations. When the problem is happening which CPU core has the highest load?
 
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ko888

ko888

Titan
Feb 18, 2009
16,708
41
84,990
That seems to be a common problem.

After the game is up and running, switch to the Windows Task Manager's Processes tab page.

Find and select the AC4BFSP.exe or AC4BFMP.exe process for Assassin's Creed IV: Black Flag. Right-Click on the selected process and select the Set Affinity... option. Unselect (i.e. uncheck the check box for) the last processor and click on the OK button. Switch back to the game and then switch back to the Windows Task Manager and change the Set Affinity... setting back to <All Processors>.

Some have reported that this results in the CPU usage leveling out among all of the processor cores.
 
Upvote 0 Downvote
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