ETS2 with poor quality graphic card (Ati Radeon HD 2300)

Not fluid and jerky game. The graphic card is a very low-end model Ati produced in 2007. Laptop: Acer Aspire 7720G - Intel Core2 Duo T5450 1.66GHz - 2Gb ram - Ati Mobility Radeon HD 2300 (256Mb dedicated) - Win 7