Asio4all does cop a lot of flack, but it certainly has its place. In the early days of asio it was the only solution for many people. I have used it in the past on several onboard sound chips for simple editing between gigs when touring and it worked perfectly. That said, I can't say I have ever pushed it's limits. Nice to hear it is working for you as a multi interface solution!

My standard tracking rig consists of a 32-bit WinXP Atom-powered Netbook using Sonar 8.5.3 connected to two Tascams, a US1641 and a US1800, over ASIO4All, giving me 28 simultaneous audio tracks.
 
I have been using this setup for many years and it works flawlessly, esp. live recordings.

200bpm

chuckebaby
I used to suggest ASIO4ALL to anyone with latency issues who couldn't afford an audio interface.
once I started seeing problems with it in Windows 8 and Windows 10 I stopped suggesting it to others.
IMO, ASIO4ALL is simply a band aid until one is able to treat the real problem, a soundcard.

I have a soundcard.  My new UMC204HD has incredible performance, almost as good as the RME I owned for several years.
 
The reason for me to use asio4all is so I can use two separate devices together.
 
I didnt even think to try WDM.  It will come down to which one provides better performance.  Its good to have options.  I can't see any reason to hate on asio4all.

hard to compare an 80.00 dollar interface to an 800.00 interface.
just because the UMC204HD has 24-Bit/192 kHz converters.
the RME Mic pres blows away the Behringer. I know Behringer takes a lot of flack for quality of build but for good reason.
Ive used several Behringer products and they seem to be a crap shot.
one works fine, the other one is broken 2 months later.
 

I think one of the last updates in Sonar 2.2 was ASIO compatibility. Having M-Audio cards I stuck with WDM because their ASIO drivers were not as good.

chuckebaby

200bpm

chuckebaby
I used to suggest ASIO4ALL to anyone with latency issues who couldn't afford an audio interface.
once I started seeing problems with it in Windows 8 and Windows 10 I stopped suggesting it to others.
IMO, ASIO4ALL is simply a band aid until one is able to treat the real problem, a soundcard.

I have a soundcard.  My new UMC204HD has incredible performance, almost as good as the RME I owned for several years.
 
The reason for me to use asio4all is so I can use two separate devices together.
 
I didnt even think to try WDM.  It will come down to which one provides better performance.  Its good to have options.  I can't see any reason to hate on asio4all.

hard to compare an 80.00 dollar interface to an 800.00 interface.
just because the UMC204HD has 24-Bit/192 kHz converters.
the RME Mic pres blows away the Behringer. I know Behringer takes a lot of flack for quality of build but for good reason.
Ive used several Behringer products and they seem to be a crap shot.
one works fine, the other one is broken 2 months later.
 

I was talking about the quality of drivers, the stability, and latency.  I got the RME UFX for lowest latency for tracking back when there weren't any other good USB solutions.  Surprisingly, the new Behringer unit is pretty great all around.  Plenty fast for tracking with heavy VSTs.  I haven't had a single dropout or stutter.  It also supports multi-client audio so it seamlessly integrates with desktop and daw applications.
 
The RME preamps are much better, but overall sound quality of conversion is not that far off.  The behringer lets you bypass the preamps however.
 
 

Asio4all is said to be a "WDM Wrapper" that fools your system to thinking it's using ASIO. 
Cool idea and lots of folks have good results. 
But before you install it, always try and see if your device works in WDM mode. I think there needs to be windows drivers present. For example, my Tascam works in WDM mode , but that mode is not available for my Scarlett. 
 
If your using WDM mode (or asio4all)  make sure to do a loop back test and see if your recordings line up. I found WDM mode's offset was off and actually came back early in most cases.  True blue ASIO drivers will always outperform WDM mode it would seem. 
 
 
The other thing to be aware of is once installed asio4all can cause issues with your proper ASIO drivers. People complain of getting the "no audio device " warning and removing all traces of asio4all usually solves the problem.  Here's a screen shot showing how WDM mode can be early but ASIO is right on. 
 

Good information.

that is a great illustration .

I played around with it, and by selecting only an asio4all input device, when I attempted to close audio options, sonar gave an error saying I needed to select an output device.. .and lo and behold, both asio4all devices showed up in the lists.
 
Thats really works.Its a typical bug with sonarx3 and im using the focusrite scarletti 2i2 2nd gen.It has an asio driver which used to clash with asio4all which was being used for pianoteq.Now both work together.Thanks for the suggestion.
MAY YOUR KNOWLEDGE BENEFIT ALL.
SJA

sjohn
 
im using the focusrite scarletti 2i2 2nd gen.It has an asio driver which used to clash with asio4all

That's typically what happens
 
I've used ASIO4ALL in the past as well. At first, it worked pretty good.
But before long, things in my house started disappearing. I started noticing things being purchased with my credit card that I hadn't purchased (I think it was a soundcard). I woke up one morning and ASIO4ALL was gone. And so was my car keys (and my pregnant cat).
 
Let this be a lesson, use with caution.