Not much.

The recommended system requirements to fully enjoy GeneRacing are:

OS: Windows 7 SP1+, 8, 10, 64-bit versions only; Mac OS X 10.9+
Graphics Card: Graphics card with DX9 (shader model 3.0) or DX11 with feature level 9.3 capabilities
Internet: at least a standard internet connection, obvious a low-latency (ping) internet connection is to be preferred to avoid car-lags while racing