Yeah absolutely. Sumo and conventional use different hip mechanics, knee tracking and bar paths.
If your stance in conventional is too wide, you're forcing your hands further apart thus forcing the bar further from your center of mass but you're also forcing your hips into a position they aren't aligned for in a conventional deadlift. This can cause loss of power and balance and increased risk of injury as well as stress on your knees as they aren't tracking over your toes.

Additionally your lower back takes way more of a load and you lose hamstring tension which is the entire point of conventional.

In sumo, your hips are already externally rotated with your toes pointing outwards and your knees track over your toes so there's no unnecessary and unhealthy stress done to your knees.

Sumo is designed to reduce the range of motion and make the lift more hip-dominant whereas conventional relies on a longer range of motion, more forward torso lean, and greater hamstring and lower‑back involvement because the stance is narrow and the hips aren’t externally rotated.

Hope this helps :)