hello i'm back shs7xl sound distored with vsti

 
happy Easter.......
Dear friends  how is everything?
ok after 6 months plus i am back ...i run a sonar 7 home xl ,i had a problem with the software were after using 2 or more track with vsti i had a sound distorsion and the cpu usage was going to the red...well the pc whent down and after few months i was able to buy this laptop 2x the memory and space and still i am having the same problem...it is less than the old setup but still the sound are not clean ...it sound like just like you play alive  and you have a bad jack cable ...i've notice that if i use very low volume the problem is lot less ...here my set up
midi controller keyboard roland xp 50 .... usb to midi cakewalk um 2g....  usb audio    interface behringer uca 222 to an ordinary headphone set sennheiser hd497
pc   dell inspiron 1750 window 7   ram 4.0   processor intel(R) core (TM)2 dual cpu t6600  @2.20ghz ...64bit operating system
thank you for your help...Tony C

thank you for your tip beagle ...i allready tryed that but did not worked
i think it may be the behringer ,so my question to you is what can i buy
that will fix the problem and is not to expensive?
money right now is an issue for me...thank you and sorry to hear about this member ..Tony C

Check all your connections; it could be a wire problem.
You can also change the number of buffers in the playback queue or the I/O buffers.
Increasing the latency might help.