Consider waiting a small extra delay for each syscall on commands with multiple syscalls

[dbarnett]

Hijacking system calls incurs a small (<0.1s) overhead. If a command triggers a series of several system calls, it's likely to take longer than the default vroom delay and need an explicit extra delay like (0.5s).

Vroom should take into account when it knows it's expecting several system calls and account for a little extra delay per system call.