Identify the problem, if any, before applying a solution.use throttlestop and disable intel thermal frameworks if possible, other settings in bios might disable power limits but very likely there is a power savings mode enabled or it is bottlenecked by your gpu which isn'tt functioning properly which may have a power savings mode enabled in it's manufacturers controll panel nvidea/amd
Does your CPU run at its full rated speed? If your CPU is not throttling then there is nothing that needs to be fixed. A CPU that consumes less power is a good thing, not a bad thing.