Yes I believe the 85mm f1,4 GM is slower to focus compared to the FE 85mm f1.8 and the Batis 85mm f1.8 lenses but you have to remember its having to move big chunks of glass inside. As present I think its the normal to expect slower focusing 1.2 / 1.4 lenses purely due to the internal glass which needs to be moved with the motors.

It's not bad to focus for the intended use / market the lens is aimed at.... which is portrait work.
Ff you need to use Eye-AF in AF-C mode on a fast moving subject then the only viable option is to shoot at 20 fps, it will get some keeps that way but will the majority will be out of focus.