PC SIMU V4 natively supports upscaling. For 4K resolution, set DLSS to "Balanced" mode. For 1080p or 1440p, stick with "Quality." Do not use "Ultra Performance" – it makes instrument panels blurry.

You prefer arcade-style flying (like Ace Combat ), you have an older PC with less than 16GB of RAM, or you rely on a massive library of V3 add-ons—note that only 60% of V3 mods are forward-compatible without a patch.

Cause: Corrupted rolling cache. Fix: Go to Settings > Data > Delete Rolling Cache . Set the cache size to 50 GB (not unlimited).