Thumbnail view provides and easy way to explore through all the images & pictures contained in a folder in a single go, but if you have low system memory then using this feature can become a bit of a drain on your system. For faster exploring, it is possible to lower the thumbnail size and quality by a simple registry trick. Just Follow the simple tricks!
Step 1: Go to start and click on RUN.
Step 2: Type “REGEDIT”
Step 3: This will Open the registry. In the left pane, navigate to :
“ HKEY_CURRENT_USER\ Software\ Microsoft \ Windows\ CurrentVersion\ Explorer “
Step 4: Create a new DWORD value called ThumbnailSize, and set the value between 32 and 256. ( This reduces the size of thumbnails in Explorer. Something around 45 will be fine)
Step 5:And/or create another DWORD value called ThumbnailQuality, and set the value between 50 and 100. ( This sets the quality of thumbnails! )
This simple Editing will reduce the load on the system while you browse in thumbnail view.