PSVR 2 games could benefit from the PS5 Pro in several ways, provided developers deliver visual upgrades:
A higher frame rate: Particularly performance-hungry PSVR 2 games use reprojection to artificially double the frame rate. Sony's reprojection technology is controversial, however, as it can cause unwanted visual effects and even nausea. With the PS5 Pro, some titles may be able to avoid reprojection and render natively at a higher frame rate.
A higher resolution: Developers could use the power for a higher resolution, making games look much sharper.
Better 3D models, textures, and effects: The most elaborate way for developers to use the PS5 Pro would be to improve graphical assets.
PSVR 2 games could theoretically improve in all three areas, but it remains to be seen what improvements will be announced in the coming weeks.