oK i AHVE READ WAY TO MANY FREEZE PROBLEMS,I use both midi and wav tracks for drums in session 3,
so far for what I have found ,1.your computer doesn't have enough memory,you need a min 0f 8gb,and a min i5 and a 7200 rpm HD. AND MoST IMPORTANT A REALLY GOOD INTERFACE.
All the lower price intterfaces..(drain to many resources from your computer) for a simple 2 in + midi the rolandusb25ex works well
But if you are like most people they want a min 8 in,I bought the tascam 1641 and it drain s like crazy(only open the ports in use.unless your recording a whole band 1 or 2 ports at a time .
Now I run a dual i7,with 32 gb of memory,160gb SSD drive as my primary ,1tb 7200 backup drive(esata)
Motu 828mk3 ,motu midi express 128, the 828 processes it self (can also run as a stand alone mixer) takes the drain of the computer.I sampled my drumers kit and use it in session..works great but as wav files the processing is huge.
unless you have a large computer setup, limit your drums to midi.don't record long clips just cut and paste.
as for other people complaining about freezes..this also applies.x1 pro is a great program but requires a pro rig with it or just linit to short clips .turn off what your not using(especially antivirus or maitenance programs)and the internet.
Gary