Maxthon has recently been being seriously unresponsive, on both a decent laptop of which I've been using maxthon for many months, and even on a speedy desktop which has been using it for multiple weeks. I'm not sure what is causing this, but common forms of it are tab switching and tab refreshing lags a couple seconds. Sometimes opening a new tab will lag for a substantial amount of time; once the new tab would never load nor respond either indefinitely, surprisingly duplicating a working tab was the only way to browse then. And no, I'm not referring to tabs that have been cached into VRAM/SWAP, that's not the problem. Nor do I have many extensions nor any skin modifications that would affect performance.