Years ago, when I used JRiver only for audio, slowness wasn't an issue. Maybe the slowness is inherent to video files? But days ago, prior to installing 27, speed wasn't an issue and I didn't even know about Defender issues, let alone about the need to perform mitigation for it.
Per the above Defender thread, I've inserted the list of every folder and all of the dozens and dozens of files suggested. But the importing of video files is taking about 1 per minute. Before 27 and no attempt at "taming" Defender, video files were loaded so fast, I couldn't time them. Perhaps they had been previously imported and the time taken to initialize them was circumvented.
Nevertheless, as I'm importing folders and modifying tags and then clearing them to import another folder, the tagging I've done is taking forever to save after MC closes. For example, I began with 900+ files last night when I retired for bed and this afternoon, 256 files remained to be saved. This was probably abnormal slow, because my HD &/or PC went to sleep/into standby. Nevertheless, should tag saving take hours for 900+ files? Just now, the saving of approximately 100 files, has taken approximately 15-20 minutes. The pattern is that a group of approx 15 files are rapidly saved and then the PC hangs for several minutes, before the next grouping are saved. Is this timing and behavior normal or not?
Second question: After I'm done tagging and Exit out of JRiver and the files are being saved, is it safe to shut-off the PC? Will my tags be saved or not? Will the saving process re-begin when the PC is energized, or will my efforts be lost?