You guys ARE USING ASIO not MME?

I just tried this with a factory demo song (in BOTH Win 7 Pro and Win 10 Pro)

Style "J~Easy.sty" and it's demo song "Bluebird - J~Easy.sty demo"

ALL MIDI tracks except RD's.

MIDI routing: computer to a USB MIDI 4x4 unit that goes to my first JL Cooper MSB Rev 2 MIDI patch bay that feeds my second JL Cooper MSB Rev 2 MIDI patch bay then finally out to an Edirol SC-8850

And initially the RD's were lagging badly - until I remembered to check - I still had MME on!

As soon as I used an ASIO driver (I tried both my M-audio FW 410 native driver and the ASIO4ALL driver) timing was good even at 512 samples (buffer size).

Routing to a few other units (all set to GM) no timing issues (XV-5080, Integra 7, QSR, Fantom XR, Montage 7, Alesis Fusion) all on different ports or different MIDI patch bays even thru multiple patch bays (which adds around ~3-5ms depending delay anyway)

Good Luck
Larry

Win10Pro,i9,64GB,2TBSSD+20TBHDDs,1080TI,BIAB'24,Scarlett18i8,Montage7,Fusion 8HD,QS8,Integra7,XV5080,QSR,SC-8850,SPLAT,FL21&others,Komp.14,IK suite&others, just a guitar player-AXE FX III &FM9T, FishmanTP, MIDIGuitar2, GK2/3'sw/GI20