I have noticed that tagging the Artist and Album fields is slower in MC11 than it was in MC10. I cannot anymore tag in Excel style rapidly jumping from a field to another. I must always wait for a second or so after writing the tag before MC finishes the tag and allows opening the next field for editing (I usually click the next field and press F2). This happens also when "Update tags when file info changes" is disabled in MC options.
These two fields have the dropdown menu, which was removed from the Name field some time ago. Tagging the Name field is instant.
I have 5536 Artist, 3866 Album and 30551 Name items in this library (without duplicates). The total number of files is 39509. The library and the media files are on a local latest generation serial ATA drive.
Media Center Registered 11.0.310 -- C:\Soft\MC\
Microsoft Windows XP 5.1 Service Pack 1 (Build 2600)
Intel Pentium 4 2859 MHz MMX / Memory: Total - 1048 MB, Free - 565 MB
Internet Explorer: 6.0.2800.1106 / ComCtl32.dll: 5.82 (xpsp1.020828-1920) / Shlwapi.dll: 6.00.2800.1612 (xpsp2.041207-1145) / Shell32.dll: 6.00.2800.1643 (xpsp2.050311-1242) / wnaspi32.dll: 4.71 (0002) , ASPI for Win32 DLL, Copyright © 1989-2002 Adaptec, Inc. / Aspi32.sys: 4.71 (0002)
Ripping / Drive F: HL-DT-STRW/DVD GCC-4480B Mode:ModeSecure Type:Auto Speed:Max
Digital playback: Yes / Use YADB: Yes / Get cover art: Yes / Calc replay gain: Yes / Copy volume: 32767
Eject after ripping: Yes / Play sound after ripping: No
Burning / Drive F: HL-DT-ST RW/DVD GCC-4480B Addr: 1:0:0 Speed:24 MaxSpeed:48 BurnProof:Yes
Test mode: No / Eject after writing: Yes / Direct decoding: No / Write CD-Text: Yes
Use playback settings: Yes / Normalization: None