The BCM94312HMG has native, out-of-box support in Windows 7. Drivers are typically bundled with the laptop manufacturer's system recovery image.
If a new update causes instability, use the "Roll Back Driver" option in the device's Properties menu in Device Manager. broadcom bcm94312hmg driver updated
To quantify the improvement, here are real-world benchmarks from a Dell Inspiron 15 (BCM94312HMG) on Windows 11. The BCM94312HMG has native, out-of-box support in Windows 7