Using Parallels Desktop 15, if I set the mouse setting to "Optimise for Games", then unfortunately scroll inertia gets disabled. Is it possible to re-enable it? I need scroll inertia, because I'm running Parallels on a MacBook Pro, so I'm using the built-in trackpad - without scroll inertia, scrolling is pretty painful (i.e. slow!) using a trackpad, as you keep having to 2-finger-flick again and again. My situation is that I'm trying to get Adobe Photoshop CS4 working in a Parallels VM running an old version of macOS (I've tried both Mountain Lion and Mavericks). For some reason, although Parallels' default mouse setting works OK for the built-in macOS applications, unfortunately it doesn't work well under Photoshop CS4 - hold-click-and-drag jumps all over the place under Mountain Lion, and doesn't move at all under Mavericks. The only way to get it working is to enable the Parallels setting "Mouse: Optimize for Games". But enabling this setting then disables scroll inertia, so scrolling becomes slow and painful on my trackpad! I've also tried VMware Fusion. Although scrolling works better, performance is quite a bit worse - Photoshop takes longer to start, and screen redraw is much more choppy (whereas Parallels is super smooth). I'd be sooo happy if I could get faster scrolling - is it possible to re-enable scroll inertia after enabling the "Optimise for Games" mouse setting? Alternatively, could Parallels expose my trackpad to the macOS VM as a trackpad, instead of a mouse? If Mountain Lion/Mavericks could see I was using a trackpad, I think they would automatically give me the option to toggle scroll inertia on-or-off in System Preferences. But since Parallels is exposing my trackpad as a mouse, the scroll inertia setting is not available in System Preferences. Thanks for your help!
