When my Macbook gets to around 5-6% battery, I start noticing significant UI lag. Animation stutter, delay when clicking Finder windows, stutter when scrolling, etc. When I connected it to the power cable, no more lag. I realise this is probably a battery saving feature, i.e. the CPU is being throttled to try and conserve power. But has anyone else noticed it? And can it be turned off? Thanks in advance.