Need more help

I posted a few months back about a horrible lag problem I was having. The problem never went away. Unfortunately, now I can’t even record in NTrack anymore. I’ve also noticed MIDI files no longer work on my computer.

When I try and record in NTrack now, the VU meter doesn’t move at all, and a message comes up saying “chunk contains no data.” I tried performing a full duplex test, and it says it was "impossible."

Anyone have any ideas?

Never mind. I somehow got it to record.

However, I still have the lag, which seems to oscillate around -0 and -60. Any ideas?