Sidroe
I'm running X3 on a Toshiba laptop, Windows 8, with 16 gigs of RAM, with a ton of plugs and vst instruments. It also has a secondary drive. I have to mention that both drives are 5400s. When I record and mix everythings in the box. This is my mobile recording rig. When performing live I use an old Focusrite Saffire USB just for outs to the house. Of course, just playing projects I can juice up the buffer pretty high so no problems there. If I am recording live in a group situation, sometimes as many as 24 tracks live at once,( I do quite a bit of gospel choir recording), I use 2 Roland Studio-Capture 1610s synced together for 32 ins and 20 outs. I can usually with smaller projects get around the 128 sample area. The larger projects usually hover around the 256 mark. If I use the Saffire for recording, the buffer usually starts around 128 and gets bumped up to 256. If it's turning into a sizeable production, 512 is the norm. Needless to say, the Studio-Captures are usually the ticket for recording.
I have an older Asus quad desktop that had been my main workstation for a few years. The desktop has virtually replaced it. I did some of the suggested tweaks for better audio performance in Windows 7 on the Asus. The first day or two the computer acted kind of strange. As if it was getting used to the new setup. After the first day, it was blazing away like a Ferrari! It still is not the computer the Toshiba is but tweaking it DID help. I have seen so many posts that say it's not necessary to tweak a computer anymore after the advent of Windows 7 and 8. I can attest to the fact that, IN MY CASE, it absolutely made a difference.
Again, I have been very lucky with my computer choices. I have always bought off the shelf computers and cleaned out all the bloatware and such. By the time I got done cleaning and tweaking, I have ended up with some very reliable rigs. It can be done.
Now the troubles I have faced has always been due to a plugin that just is not happy working with X3. I don't use anything with a dongle! I guess I have Big Brother Syndrome. I test all the plugs until I find the culprit. When the plug is found I eliminate it completely. Usually I have something else I can use and if not I will find a newer or better plug, give it a trial run and if all is good I get it.
I feel your pain. I am not here looking down my nose saying you should have bought that 18 core Intel with 5,256 gigs of RAM. When I first started out in computer recording I started with out with a custom built machine that was supposed to be Abbey Road in a box! It was soon replaced by an off the shelf HP full of bloatware and minimum memory. Don't get me wrong!! There a lot of great builders out there and some right here on this forum. Maybe you could try contacting them. Jim Roseberry comes to mind. I have recorded on systems that you could launch a rocket to Mars on and I have recorded on rigs that were no better than a word processor. If you spend the time to tweak a little and find and stick with the plugins you know work well for you, you can work comfortably and reliably.
I know this got long winded here but I thought maybe sharing my experiences could help. I wish you luck and I wish I had THE answer for you. Unfortunately, the bottom line is to find out the settings for your rig that run best for you. I can attest to the fact that no two machines run the same. Even if it is the same make and model!
Hi Sidroe ,
you and I sure both have a lot in common ,
if we ever decided to join forces and write a paperback together it would be the size of a Big City phone book

I honestly do say that with Love

I did find your post to be an interesting read .
You certainly can serve as a strong power of example of what can be done with a lap top when it is set up right .
Having the right hardware to go with it seems to carry a lot of weight .
I'm very impressed that you are in a position to record and have such versatile options while working in the type of musical environments you have mentioned …I can only picture it in my mind and your post actually brought me back in time ...
as a guitar player I did a little stint in the gospel genre and it turned out to be one of the most rewarding musical things I ever did as a sideman …
i worked a little over a year playing my guitar for Andrae Crouch over at his church on Vaughn street ..
this was in the early 2000's . it sure was a mind blowing experience and I got to play with every body
I'm not having any problems with SONAR or any of my plugins .
I think I might need to clean out some of the bloatware that I still left on there …
maybe you could suggest to me a good place to start...
my current needs are pretty simple …
I record at home alone …usually one track a time with the only musician a can afford ..lol
thanks for your post
Kenny
Kenny