what version are you using? This sounds like a bug that emerged in a recent release that has since been fixed.
On the bright side, we optimized a lot of the WQL handling so it's much faster now.
(we're now on 1.14.5, though we may get some minor patches out in 1.14.6 by the end of the night)
1.14.3. Shall go do an update.
Yep, back to normal.