RunWorkload module not found on some environments

[Matticusau]

In some cases when launching the toolset via the load test method with

Start PowerShell.exe -File "C:\Workload\RunWorkload.ps1" -SQLServer "SQLNode01\Prd01" -Database "AdventureWorks2014" -TSQLFile "C:\Workload\SqlScripts\AdventureWorksWorkload.sql" -Frequency "Fast"

The .\RunWorkload module is not able to be found as PowerShell seems to be starting into a different default directory.