Massive performance drops when looking up

[GhostReporting]

I'm on a Lenovo IdeaPad L340, and I'm having some heavy performance issues. I was able to play Grounded 1 just fine on higher display settings, for what that's worth.

I've had low FPS in general, though it eased somewhat after turning the settings way down. The biggest problem is that anytime I look up, or challenge the camera to look across a wide open area from a high vantage, the FPS drops to uncontrollable levels. Building a roof on my little cabin was... difficult.

Seperately, another small issue is getting into/out of anything with an inventory (chests, fire pit, etc). It tends to freeze up or not take inputs. I would guess this is also related to the frame timing.