Disabled 'Shake mouse pointer to locate' setting in El Capitan but still get big cursor I have been able to disable the shake cursor to enlarge setting by going to Settings &gt; Accessibility &gt; Display &gt; Shake mouse pointer to locate and disabling the option. The only issue is when I try and use the trackpad on Better Touch Tool Remote (iOS), the cursor is large all the time I am using the BTTR Trackpad!

Is there a way how I can fix this problem? I can only disable the big cursor when using the MBP trackpad not the BTTR one.

I am using El Capitan Public Beta build 15A262e
That just sounds like a bug to me. Really, like with all beta software, bugs are to be encountered in the OS X El Capitan Public Beta. In fact, that's the point of betas, let certain users find and report bugs so that Apple, or whatever developer, can fix them before the software reaches mainstream adoption. So, unfortunately, all you can really do is report that bug to Apple, using Feedback Assistant. If you really hate it, then you could either wait for the public release of El Capitan in a couple of weeks or downgrade to Yosemite. You could also try installing El Capitan again, but it just like a bug in the beta software to me.