Marginally. The Mali G76 is bandwidth-limited. Newer drivers (r38p0 vs r28p0) can improve Vulkan draw call efficiency by ~5-8%, but they cannot overcome hardware limitations.
Huawei released partial kernel source for Kirin 980 (for GPL compliance) at https://consumer.huawei.com/en/opensource/ . However, most driver blobs are precompiled binaries. hisilicon kirin 980 driver
Force eRecovery (press and hold Volume Up + Power while connected to a PC running HiSuite). Select "Restore factory firmware." This will revert all drivers to stock. Conclusion: Respect the Walled Garden The Hisilicon Kirin 980 driver landscape is not for the faint of heart. Unlike PC or Snapdragon platforms, you cannot freely tinker, swap, or upgrade individual drivers. Huawei’s integrated model means that drivers are inseparable from the firmware update cycle. For 99% of users, the best "driver" is the latest official HarmonyOS or EMUI update. Marginally