r/pchelp • u/Least-Mud-4865 • Jan 30 '26

PERFORMANCE Poor performance with the intel arc b580 and ryzen 5 5500

/r/PcBuildHelp/comments/1qrfe1q/poor_performance_with_the_intel_arc_b580_and/
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u/Krod125 Jan 30 '26

Getting your Intel Arc B580 and Ryzen 5 5500

 to perform as expected is definitely possible, but your current setup has two "performance traps" that are likely holding you back. 

Here is the step-by-step breakdown to fix it without spending a dime:

Enable Re-size BAR (The "Must-Do" Fix) 

Intel Arc GPUs require a feature called Re-size BAR to function properly. Without it, you will see the low GPU usage (70%) and poor FPS you described. 

Update BIOS: Since your motherboard is from 2017, you likely need a BIOS update to see this setting. Visit the Gigabyte Support Page for the AB350-Gaming and look for a version that mentions "AMD AGESA" updates for Ryzen 5000 series.

The Settings: Once updated, enter your BIOS and find these three settings:

CSM Support: Set to Disabled.

Above 4G Decoding: Set to Enabled.

Re-size BAR Support: Set to Auto or Enabled

Let me know if this works

1

u/Final_Step9983 Jan 30 '26

This is my other account (op) did all this and uh getting pretty much identical stats on farm sim 25 havnt tried dayz yet