The need for a 4K display for a golf simulator depends on personal preferences and requirements.

A 4K display will provide higher resolution and a clearer picture quality, which can enhance the overall experience of using a golf simulator. The higher resolution can make it easier to see small details like the ball flight, trajectory, and distance, which can be crucial in improving your swing.

However, a 4K display may not be necessary for everyone, and it ultimately depends on how important image quality is to the user. If you’re primarily using the simulator for practice and training purposes, a 1080p display might be sufficient. On the other hand, if you’re using the simulator for entertainment purposes or plan to use it for high-end competitions, then a 4K display would be more suitable.

It’s also worth noting that a 4K display would require a more powerful computer and graphics card to run smoothly. Therefore, the cost of upgrading your system may also be a factor to consider.