Latency monitor is an app to run on your PC. It checks to see if a system running Windows is suitable for processing real-time audio and other tasks.
LatencyMon analyzes the possible causes of buffer underruns by measuring kernel timer latencies and reporting DPC and ISR execution times as well as hard page faults.
It will provide a comprehensible report and find the kernel modules and processes responsible for causing audio latencies which result in drop outs. It also provides the functionality of an ISR monitor, DPC monitor and a hard pagefault monitor.
I use the free version (home version)
There are other programs available, but this is the one I use.
BTW…I own nearly every amp sim available. One of my favorites is Bias. If I add just a few resident fx pedals or modules, my CPU spikes, which causes drop outs, distorted noise, and pops n crackles. Needless to say, I rarely get to use Bias. I moved on to CPU friendly sims until I purchase a more powerful computer with more bells and whistles.
Setting buffers at 512 is unacceptable for guitar.
Works just fine for me with my specific computer. It took a lot of experimenting, but that setting has been golden for guitars and keys the last 4 years. You have to experiment…I still do.