Engine Runs restless at Punto 176

Moin Moin, have a little problem with my little Punto 176 16V year 1997. If it is warm, the stationary gas gets restless. Knackt ziwschen 700 – 1200U/min. When it accelerates, it is also very difficult. As if it had misignition. From about 3000 U/min is then again ok. Lambda probe, ignition cores, gasoline filter, air filter are new. Someone’s idea what that could be. I’m really guessless. The car was also read out. Then I had the Lambda probe changed because the defective was What’s funny is that he’s running so restless at the stand gas. Can’t actually be the L. probe. Thanks for your help. Miro