hangs & just closes itself, when loading & browsing large pages on desktop mode when page optimization (reading mode) is off. i guess it can't handle large desktop pages, though the pages aren't that extraordinarily large & load well on other...
Virtualization has recently been implemented to optimize memory usage. When reaching a critical low memory level Surfy also stops any ongoing navigation to prevent a crash. Under some scenarios it is, however, not possible to prevent the web browser component, which all third-party browsers use, from exceeding the memory available to the app and crashing.