I'm with Simon takes too long, especially if you want to zoom to 100% in lightroom. My system isn't beastly but it's more than powerful enough but it's not even close compared to using perfect browse. I also find with lightroom even if I pre render the library previews half the time I still get that initial camera jpg flashup before it renders the correct image.
My wedding workflow at present is once I get home import all cards in lightroom leave running overnight so all data is backed up to onedrive before proceeding.
- 1st pass in perfect browse quick run through full size images 1 star any images that look ok.
- 2nd pass in perfect browse filter one star run through imagesfull size removing star from any that don't stand up to new selection.
- Resync folder in lightroom to import stars from perfect browse scans.
- 3rd pass in lightroom develop module go through each image check groups at 100% images for sharpness expression, apply crops as needed, 2 star all keeper images as I progress
- 4th pass in library grid view use quick develop exposure adjust to match up images jumping in to develop to batch apply white balance syncs acroos similar sets of images, wish you could enter white balance values in quick develop

- 5th final pass in lightroom develop module make any local adjustments and any that need retouching get flagged red.
- Export all images as 16 bit tiff images to selects folder
- apply any final styling to finished images
I know importing through lightroom probably seems inefficient but I have import presets that work well for putting everything where I need it and adding meta data i want quickly, I can leave it running so it's not a big deal how long it takes. I could also probably merge 2nd and 3rd passes but I'd need to be more careful so not sure how much time I'd save.
I don't think it's the most efficient methodology in the world though it doesn't feel as bad as it looks written down but keeps everythings output quite consistent at the end. I'm testing out capture one at the moment and really like aspects of it but I'm used to lightroom for these jobs. On latest one I'm going to try moving to capture one at step 5 to see how it keeps exposures and crops as I really like their skin whitebalance tool, skin tone smoothing and overall output compared to lightroom, think it will make for cleaner images overall.