Why enabling fTPM can make the system feel slow
On your
Gigabyte GA-AB350-Gaming 3, the TPM you’re enabling is actually
firmware TPM (fTPM) built into the CPU—not a separate chip.
The root cause (common on older AMD systems)
This lag issue is tied to a well-known AMD problem:
- fTPM uses the motherboard’s SPI flash memory
- That same flash is also used by the BIOS
- Access is slow and blocking
So when fTPM needs to:
- generate random numbers
- access security keys
- validate system state
…it can briefly
stall the CPU, causing:
- app launch lag
- stuttering
- system pauses
This issue became widely known around Windows 11 adoption.
The official explanation
AMD acknowledged that:
- fTPM can cause intermittent stuttering
- especially on older AM4 boards like B350/X370
They fixed it in
newer BIOS updates by:
- improving firmware handling
- reducing blocking operations
Why your BIOS version matters
You’re on:
Later BIOS versions (like F54):
- include updated AGESA firmware
- improve CPU compatibility
- fix fTPM stutter issues

In other words:
Your lag is very likely because your BIOS is too old—not because TPM itself is “bad”.