Xojo is slower than Python

In Rust

use std::time::Instant;

fn fibonacci( n : i32 ) -> i32 {

    if n < 0 {
		0
    }
    else if n == 0 {
    	0
    }
    else if n == 1 {
    	1
    }
    else {
    	fibonacci(n - 1 ) + fibonacci(n -2)
    }
}

fn main() {
    let start = Instant::now();

	println!("fib(35) = {}", fibonacci(35) );

    let elapsed = start.elapsed();

    println!("Millis: {} ms", elapsed.as_millis());    
}

First I compile it (cargo build)
Then I run it with

perl -MTime::HiRes=time -e 'printf "%.9f\n", time' ; /Users/npalardy/RustProjects/fibonacci/target/debug/fibonacci ; perl -MTime::HiRes=time -e 'printf "%.9f\n", time'

1590771171.419712067
fib(35) = 9227465
Millis: 115 ms
1590771171.550776005

or .492 seconds total - only 115 msec to do fib(35) though
and this time includes start up and tear down by the OS to start the process

compiled a comparable xojo app aggressively and ran it the same way (just the perl portion)

1590771626.041557074
9227465
1590771626.853302002

so .811 sec which isnt shabby