I have the "White Screen Thing"only as a[more than likely] precursor to a crash,and[again] only on my sig. laptop,but pretty rarely[these days].
Also,I have exactly 700 VST effects plugs[mostly Free/Donation 32 bit,in 64 bit X2,just using the built in bridge-no problems],but I also have[and mostly use] Waves SSL,API,PSP,The Glue,DSM,all 64 bit,and Iv'e never had lags loading plugins,or projects?
My biggest "timewaster" is waiting for exports/rendering offline or on of projects,only to have them fail,sometimes 4 or 5 times in a row...uggh,but I'm putting THAT down to the HW/HW age/HW enviroment[nicotine].
The next session most things are ok again,except a bug where when selecting "export",it will "invariably" open to the wrong page[This also happens with some other "opening" of explorer areas-always incorrect],but easily re-selected,very annoying though.
I cannot think why effects plugins would take time to load,unless it's what "CJ" is saying?
Bob