Since installing the Windows 10 technical preview, my drive performance has been abysmal. I've tried reinstalling the chipset driver. I've tried it with and without AnyDVD. If I can get a DVD to read at all without just crashing, the speed is 1.1x at best. I've only tried one BD and that seemed to be fine but it could have just been luck. This is what usually happens with AnyDVD disabled:
MakeMKV v1.9.4 win(x64-release) started
Error 'Scsi error - ILLEGAL REQUEST:COPY PROTECTION KEY EXCHANGE FAILURE - KEY NOT ESTABLISHED' occurred while issuing SCSI command A30..00CC3000A0..0FFFFFFFFFF0..0 to device 'SPTI:\Device\CdRom0'
Drive BD-ROM HL-DT-ST DVDRWBD CA40N A102 has RPC protection that can not be bypassed. Change drive region or update drive firmware from http://tdb.rpc1.org. Errors likely to follow.
Using direct disc access mode
Calculated BUP offset for VTS #1 does not match one in IFO header.
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '155648'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '157696'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '159744'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '161792'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '163840'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '165888'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '167936'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '169984'
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_01_1.VOB' at offset '169984'
IFO file for VTS #1 is corrupt, VOB file must be scanned. This may take very long time, please be patient.
Calculated BUP offset for VTS #2 does not match one in IFO header.
Error 'Scsi error - ILLEGAL REQUEST:READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading '/VIDEO_TS/VTS_02_1.VOB' at offset '53248'
Error 'Internal error - Input parameter is incorrect (946)' occurred while reading '/VIDEO_TS/VTS_02_1.VOB' at offset '53248'
Audio stream count is 24 in VTS 1
Title #1 was skipped
Audio stream count is 24 in VTS 1
Title #2 was skipped
Audio stream count is 24 in VTS 1
Title #3 was skipped
Audio stream count is 24 in VTS 1
Title #4 was skipped
Audio stream count is 24 in VTS 1
Title #5 was skipped
Audio stream count is 24 in VTS 1
Title #6 was skipped
Audio stream count is 24 in VTS 1
Title #7 was skipped
Audio stream count is 24 in VTS 1
Title #8 was skipped
Audio stream count is 24 in VTS 1
Title #9 was skipped
Audio stream count is 24 in VTS 1
Title #10 was skipped
Title #10 in broken titleset was skipped
Failed to open disc
Again, if I try it enough times, it will work but is ridiculously slow. I should note these same discs play fine in VLC. I'm not saying this is a MakeMKV problem, I'm just hoping someone here has had a similar issue and found a fix.