Plan a load test
Back3. What that would mean
One pass takes
3.735s
median of 5 past run(s)
Projected passes
480
48.0/min
Each user does
160
passes in the window
about 480 passes if the application keeps up at 3.7s each; fewer means it slowed down, which is the result you are looking for
This machine: 15.8 GB RAM and 4 CPU(s): ~400 MB per browser leaves room for about 12 at once.