Slow PlateSolve2 solves

I’m not sure what happened but plate solving with PlateSolve2 on my fast desktop computer has dramatically slowed down. It now takes about 5s to go through 1 region. For comparison, my mount computer NUC is a dramatically less powerful and slower machine than my desktop, yet solves go through the regions about 3 regions per second. Any idea what might cause this kind of slow down?