I uninstalled BIS a couple weeks ago since there was some interference with another program (Macrium Reflect) that was causing problems with that program. I've used BIS for years without significant problems. Deciding I could live with the problems of BIS causing Reflect, I now reinstalled BIS and everything is SUPPPPPEEERRRR SLLLLOOOOWWWW since. Doing anything results in a pause, sometimes long ones. Explorer takes many seconds -- a minute to respond, same for all programs. BIS seems to have kept all my previous settings from what I can see, e.g. exceptions, ...
I'm on Win 10 x64 box with updated WIndows and running latest BIS 26.0.7.32. Windows Security says BIS is handling things.
Any ideas on how to debug this?