Simulate Different Server / Client framerates in PIE

Would it be possible to add the ability to toggle different frame-rates between Server and Client instances in PIE?

Currently the only way to simulate this locally is to build out a standalone version of the game and use the t.MaxFPS console / command-line option which is quite long-winded for testing changes. I’d like to be able to do this to test code that needs to be frame-rate independent, like Server-Client Timestamps and suchlike.

That’d be nice.