In regards to the texture stream oversized pool error its not just you its everyone useing the new Unreal engine 5.0 and up. Epic has been notified of this on going issue. Unreal engine 5.2 as epic mention will correct this issue as its just a technical glitch and not really an actual concern especially you having the 40 series rtx with 16 gigs of vram you practically fine however if you do wish to make your game more stable i suggest you use the world partition and enable level streaming as this will improve fps and gameplay for pcs under the specifications that you have on your current pc.
Best regards
Dragonstorm.llc