Heyo, Sorry to hear that you have been having this trouble, as your aware there have been some issues since a recent engine update affecting some players. Our team is working on resolving these issues but unfortunately, it is not a "one size fits all" kinda thing.
To help us investigate this case can you send in a ticket to our team at the follow link :
https://support.runescape.com/hc/en-gb/articles/360006627238-Game-crashes
Please include the following system details where possible:
- Device (e.g. PC, Mac, Samsung S20, iPhone 10)
- Operating System (e.g. Windows 10 21H2, macOS 12.5.1, Android 12, iOS 15)
- GPU model (eg. NVidia 2070, Intel HD 620, Apple M1)
- GPU driver version