If you're referring to an Epson projector model SSIS-651, here are a few general points that might help:
Using AI-driven tools (like Topaz Video AI or ESRGAN) to bring 1080p content closer to 4K clarity. ssis651 4k patched
AI to attempt to reveal underlying detail that was originally obscured. Where to Find Information If you're referring to an Epson projector model
Do you have for playing 4K HEVC files, or UHD 4K/8K E Series 20GHz Patch Panel, 1RU - AVP Broadcast Vendor patch notes (link) Community thread (link)