Hey guys,
So your best bet would be to better familiarize yourself with how to troubleshoot textures streaming issues by learning the appropriate console commands and ways to read the information presented. For this we have a documentation page dedication completely to Texture Streaming.
Use the console commands suggested in order to effectively troubleshoot your texture streaming problems. If you are completely stuck and have no idea how to resolve you streaming issues, I can try to point you in the right direction. There are a few important things to keep in mind like the targeted platform and the size of you lightmaps and textures. If you are using 2048 or 4096 texture resolutions sizes those can quickly occupy and consume your memory as it requires more disk space in order to stream into full resolution when viewed up close.
Thank you,