Before you bring in any kind of speed into drilling you need to master form first.
Good form means going slow enough to remove excess tension, and focusing on the individual pieces that make up the whole.
The above is not an overnight process, which again is why I get irritated when I see people over-simplify things to make Jiu-Jitsu easier to learn. Something that’s effective is one thing, but wouldn’t you want to do efficient things more often within a time frame?
Remember ‘shortcuts’ are a fast track to delusion. ;o)