If the "physics feel off" or the frame rate is low, the culprit is usually Windows power management. RealFlight 9.5S RC Flight Sim with InterLink Controller

: Includes over 175 aircraft, featuring popular brands like E-flite, HobbyZone, Hangar 9, and Synergy.

Using a cracked version of RealFlight 9.5S can pose several risks, including:

Some RX 5000 series cards and newer lack DX9 support. You may need to use backdated drivers from 2018 or earlier. 2. Controller "Cracks": InterLink DX Connection Fixes

Many startup "cracks" or crashes are caused by missing or corrupted DirectX 9 files. Even if you have a newer version of DirectX, RealFlight requires specific older components.

Even on modern Windows 10/11 machines, RealFlight 9.5S relies on older DirectX components. Windows doesn't always include these by default.