Groove-based music requires a higher standard of rhythmic precision, so if you’re a classical player you should retrain yourself to approach these scenarios differently. And by the way, much of classical music is dance music. If you focus on learning how to groove, you’ll make people want to dance when you play Gavottes, Allegrettos, Rondos, Andantes, etc.., and that would be a good thing:) Chopping and strumming on the violin can be cool, but the coolest thing is always to never do harm to the music. So by all means, practice these techniques with a metronome and listen back to yourself to notice and improve your rhythm. In the meantime, on stage, heed the wisdom of jazz musicians and: “when in doubt, lay out”.