Let’s see if we can isolate the issue. First, remove the microSD card.
Load some files to the internal memory, disconnect, and let the database refresh. The refresh can take much longer if your music files contain data that the device is having trouble parsing the metadata and images from your music files.
MTP mode has many advantages, the primary one in your case is that the database refresh happens only if there has been a file transfer while connected, or if the microSD card is removed / inserted. Using the microSD card and navigating by folder , you will see some file names have numeric codes appended to the beginning of the file name (this is done to speed up the parsing process), so if you prefer using folder mode, this is a disadvantage of MTP.
If your microSD card was loaded using MSC mode, that will help you right now, since MP3Tag prefers MSC for access to the card.
Bottom line: fix the ID3 tags on your collection, and everything will work batter, regardless of teh device used. Repair the tag data in your collection on the PC, and life will be much easier!
Bob :smileyvery-happy:
