This script will allow you to mimic your windows pc as a Galaxy Book laptop, this is usually used to bypass Samsung Notes - kellwinr/galaxybook_mask
“On my laptop, the memory usage is usually between 60-70% but the CPU isn’t usually very high – 10-15% depending on what is running.” This appears to be straining. If you could add ore RAM that would help. 10-15% is OK if something is actually running you want. If it is...