[Bug] A51MR2 (i9-10900K / RTX 2080S): dGPU-connected displays turn black with only white cursor after ~90s on macOS 15.7.8 (driver 1.0.11), while iGPU Type-C output works

Hello. I currently have a laptop configured with Alienware 51MR2-10900K-2080S. After installing driver 1.0.11, booting is normal. The laptop’s internal screen directly connected to the discrete GPU and the HDMI external 4K 60Hz monitor work normally. The Type-C external 4K 60Hz monitor via the UHD 630 also works normally. However, after booting normally into macOS 15.7.8, at around 90 seconds, all monitors connected to the discrete GPU go black, with only a white cursor appearing. The external monitor on the Type-C connected to the integrated GPU remains normal. Please, expert, take time out of your busy schedule to help solve this. Thank you very much.