I'll chime in with another "this is not my experience at all". I use Spotlight religiously for the very reason that it's lightning fast for me. I've never had

I'll chime in with another "this is not my experience at all". I use Spotlight religiously for the very reason that it's lightning fast for me. I've never had it index anything for me where it interrupted me even with multiple HDDs plugged into the Mac. Most of the time it only indexes after OS upgrades and I usually do those at night when it's not business critical. Same with iOS. I've never had issues. Have you tried manually removing the index and then re-enabling it?