Need to disable hardware acceleration in Arch Linux?

Found out that Hardware Acceleration when using a AMD Ryzen 9 5900HX will cause video lockups or system reboots. Using a Minisforum HX90 computer. Using open-source drivers and admgpu. No error msg, justs locks up or reboots. All drivers, OS and software updated and current. Been using Linux for a while, but have not run into this type of problem before and have not studied Arch Linux internals. How do I disable this feature from AMDgpu. Thanks.